
Valentine in Bitterness

◆For Browser / Mobile Players The game may take some time to load.
Since this game is built with TyranoBuilder, a screen click or tap is required to start. If the screen stays black for about 30 seconds or doesn't seem to progress, please click or tap inside the game screen once the notepad icon in the bottom-right corner disappears.
◆Please rotate your phone horizontally to play.
◆(※Audio will start playing after your first tap/click.)

■Notice:
This story is purely fictional. Any resemblance to actual persons, living or dead, or actual events or organizations is purely coincidental.
■Rated 15+:
While there is no explicit sexual content, this game includes suggestive themes and imagery. Player discretion is advised.
■This story features "yandere" and "twisted love" themes, and may not be for everyone. Please be advised before playing.
■Please be aware that this story includes a heroine’s biological brother character.
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■ About the Translation
- This game uses machine translation.
- For the Steam version, the publisher is proofreading and correcting all text manually.
■The game is already complete, but for those who enjoyed it, we’re working on a Steam version.
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The heroine has someone she loves.
To confess her feelings to him on Valentine’s Day,
she has been practicing making chocolate cakes every day.
“Go for it, Yuki! I’m cheering you on!”
Encouraged by her kind and dependable older brother, the heroine steels herself to confess!
Estimated play time: around 30 minutes to 1 hour.





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■ About the Steam Version ■
The itch.io version uses machine translation, but the Steam version features an official translation provided by the publisher.
Note: Playing the Steam version without the patch may result in missing story content and artwork. To enjoy the full experience as intended, please apply the patch before playing!
※ The patch is available on the official Hanabi Games website.
For any inquiries about the Steam version, please contact “Hanabi Games.”
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| Updated | 13 days ago |
| Status | Released |
| Platforms | HTML5, Windows |
| Rating | Rated 4.7 out of 5 stars (23 total ratings) |
| Author | kanamiya |
| Genre | Visual Novel |
| Made with | TyranoBuilder |
| Tags | Cute, Horror, Otome, Romance, Yandere |
| Average session | About a half-hour |
| Languages | English |
| Links | Steam |
| Content | No generative AI was used |
Install instructions

※When playing the game, please start it by running “valentiner15.exe.”
※By default, the text speed is slow, so we recommend adjusting it via the gear icon.
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Development log
- Daily Life of Big Brother and Little Sister13 days ago
- Now Available in Browser!22 days ago
- Thank you for playing! + Quick sketch24 days ago








Comments
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OML I REALLY LOVE THIS GAME! esp with dark theme that u didn't even try to sugarcoating it ^^. Um... i wish this game could add feature that we could change our character name. Overall this game is good but i wish we could change our name
Thank you so much! Your words encourage me a lot! 🌸
The current version is machine-translated, but I plan to replace it with a proper translation in the future!
As for the name-changing feature, the game uses images to display the names, so unfortunately, it cannot be changed... I'm so sorry...!! But when I make an otome game in the future, I'll make sure players can change their names!
wtf is this shit. Dude this is pedophilia and incest. And have suggestive depictions of minors. And is so weird, next time put a warning for incest. Because siblings being very close is one thing but dude this is something else. You're so weird especially if you are going to add a NSFW version OF MINORS.
I am truly sorry for making you feel uncomfortable.
This game has already passed official ratings and is on sale in Japan; the version on itch.io is a free release using machine translation. I deeply apologize for the lack of consideration.
Please note that all characters are fictional, and I do not promote or condone any real-world taboos.
Thank you for your feedback.
no soy mucho de comentar, pero me encanta, siempre me ha gustado los temas tabú y más sobre el de hermanos en específico, estoy emocionada por saber más del lado más oscuro de aki, los pensamientos de aki fueron impresionantes pero en el buen sentido.
Y muchas gracias por la traducir el juego al inglés 💕 estaré esperando con ansias la fecha en la que salga.
después de que varios juegos suavizaran el concepto de un “yandere “ ,es refrescante ver a un personaje como el tuyo.
Estoy segura que este juego llegará al público correcto, que le encantará este tipo de temas ;))
¡Muchas gracias por tu comentario! Me hace muy feliz.🌸
Sé que este juego trata temas muy tabú y no es para todo el mundo, ¡así que me alegra muchísimo que te haya gustado! Me da muchos ánimos para seguir. Aki es un hermano mayor muy aterrador y tiene una personalidad bastante retorcida, pero sus sentimientos son muy puros y devotos.✨
¡Al contrario, gracias a ti por jugar a la versión en inglés! La traducción de Steam estará a cargo de la distribuidora (publisher), ¡así que espero que el lanzamiento salga bien y sin problemas!
¡Y gracias por tus palabras! A mí me encantan los yanderes que son "aterradores pero dulces con la protagonista". Espero de verdad que este juego pueda llegar a más personas que compartan nuestros mismos gustos. 💕
I’ve had this on my dlsite cart for a while now! Glad to see the creator on itch.io. I am going to patiently wait for the steam version to arrive… can’t wait to read the full game !1!1!1!
⚠️ Topics seen plays around the line of “taboos” and its full ver. is an r18 otomege so please proceed with caution. Avoid sending unnecessary hate comments! Let’s all live in harmony and respect different XP! ^〰️^
Wow! Thank you so much for keeping my game in your DLsite cart!🌸
Actually, I have some great news! A wonderful translator has recently stepped up to work on my game. If you prefer using DLsite, I'm planning to release an English version directly on DLsite as well—meaning you won’t even need to apply a separate translation patch to play it!
Of course, buying the Steam version is totally fine too! The Steam version will be fully localized and supported by my publisher, so they will be the ones handling any help or updates for that platform. Please pick whichever platform you prefer!
I’ll definitely let everyone know as soon as the translation is complete! Thank you for your amazing support! ✨
i really like the artwork and the background sound, the story is pretty interesting so far and thank you for the english translation! i have seen this game on the japanese website so i'm really happy i got to play it with english subtitles. i'm looking forward to the update and the R18 patch hahaha ><
Thank you so much! Your words give me so much motivation!! 🥹✨
Wow, you saw my work on a Japanese website?! That is such an amazing surprise...! 😲🎉
Separate from the Steam version (which is handled by my publisher), someone has stepped up to translate my game directly! So, the Steam version and our version will be released separately.
If you'd prefer to play without needing to apply a patch, I'd be so happy if you chose our version! I'm planning to share updates on our progress little by little, so please stay tuned! 🌸
this is honestly a great game, I've never seen any visual novels that explore this kind of trope so I hope you continue in updating this
Your kind words mean so much to me... Thank you!!! 🥹💖
I recently figured out how to write a development blog on itch.io! My plan is to update it little by little, so I hope you enjoy following along! 🌸
Is there any news as to when the full game will be released? I really like how this story goes and I don't usually find anything like this. I'm just super excited that's all!
Thank you so much! I’m incredibly happy to hear that you love the story! 🥹✨
As for the Steam version, I've left everything—including the translation—to my publisher, so even I don't know the exact release date yet...
However, someone has stepped up to translate my work directly! While the work hasn't started just yet, I might be able to share updates on our progress in the future! Plus, for the version I'll sell directly, I'll be able to provide quick support and fix any issues right away.
*Please note: Since this version will run through a Japanese server, no patches will be needed, but we legally must follow Japanese laws regarding censored content. Thank you for your understanding!
i love you cant wait for more
Aww, love you too! Thank you so much! 🥹💖
I recently figured out how to start a development blog! I'd love it if you checked it out when you have some free time!
I NEED MOREEEEEEE THIS IS SO GOOD I WANT TO BEAT THAT BLONDE SKANK UP AGHHHH
Haha, thank you so much! 🌸
That blonde character totally broke the heroine's heart, but maybe they’ll end up being the love angel that brings them together after all! 😉
AHHHH CANT WAIT FOR THE FULL VERSIONNNNNNNNNN
WHOAAA, thank you so much for your passionate comment!!! 🥹✨ And I am SO, SO sorry for the incredibly late reply!!!
Your excitement makes me so happy! I'm working hard on the full version, so please look forward to it!
Hi! I'm looking forward to playing the explicit English version :)
I just wanted to thank you for making this game! I absolutely adore any yandere, taboo, and NSFW themes and you've combined them all into one! x3 Love the protagonist too, so rare to find shy and enthusiastic heroines these days T_T
Hi there! Thank you so much for the lovely comment, and I'm so sorry for the late reply!
I’m thrilled to hear you’re enjoying my work! Yandere and taboo themes are just the best, aren't they? To be honest, making a game like this can be really challenging and takes a lot of courage to put out there, so your support means the world to me.
The version currently on itch.io is kept PG/SFW, but in the full version, their relationship is going to get much, much deeper! I really hope it lives up to your expectations!
This looks great! 👌 I do have one question. Does the itch.io version of the game contain everything without needing a patch? Or is it the same as the Steam version?
Thank you so much for your interest in my game! ❤️
To answer your question, yes! The itch.io version includes everything right out of the box, so you can play the whole game without needing any patches.
As for the Steam version, it actually includes an after-story for players who really enjoyed the game. However, please note that most scenes in the Steam version will be cut unless you apply a patch. Also, my publisher is currently working on the English translation for the Steam version🌸
You're welcome! Thank you for taking the time to answer my question. ❤️
Thank you as well! Please feel free to reach out if you have any more questions! ✨
Hoping for a Mac release soon! <3
Thank you for the comment! Actually, I'm working hard right now to see if I can make the game browser-based so Mac users can play it too! 🛠️✨
The game was wonderful! Please don't listen to other people hating on your games. Continue working on the things you love 💕.
I'm looking forward to playing this game again with the patch!
Thank you so much for enjoying the game! And thank you for your kind and encouraging words, they mean a lot to me🌸
For the Steam version, most of the scenes will be cut without the patch, so please make sure to apply it! Also, please note that I wasn't directly involved in the development of the Steam version, so I might not be able to fix any bugs immediately. However, I can contact the publisher for you, so please don't hesitate to let me know if you run into any issues!😭
Hello! I'm the developer of Valentine in Bitterness.
I've made the game playable in your browser, so I’d be really happy if you could check it out whenever you have some time🌸
Hello, thank u for the hard work. It works fine for me. I can finally play it 😭
Hello! Yes, I finally got the browser version working!!🌸
I love it 💞 so excited for the 18+ content
Thank you so much for liking my work!! It really means a lot to me🌸
this is disgusting. incest is one thing, but nsfw content of minors shouldn't be allowed at all on this site. please reflect on yourself
I sincerely apologize for the discomfort I have caused you.
While this work contains no explicit sexual depictions, I recognize that my lack of consideration led to this situation. Going forward, I will take the utmost care to ensure my scenarios are appropriate and do not cause offense.
In the future, should any content contain potentially inappropriate themes, I will refrain from posting it on itch.io.
thank you, i appreciate that
I'm sorry you had to get blasted for posting a game that was allowed to by added here in itch.io with the content it has already.
I'm honestly looking forward to paying this game on steam with the 18+ content once available!
Don't submit to these people. Make the NSFW content
If you don't like it, just leave. The website still allows posting, so what right do you have to criticize the author? Are you really going to manage these 2D images? The author warned you before downloading the game. Are you trying to start a fight?
i notice you use the word "it" in your first sentence to refer to incest and pedophilia, as if i were upset over anything less.
"are you trying to start a fight?" the author has already apologized. everything's worked out. why are you here starting new shit bro 💀
You need help lmfao.
please make it for MacBook...
I'll contact the publisher!
Also, since my computer isn't a Mac, I can't render the game, which means I can't upload it to itch.
ohh I didn't know, but I do hope it gets to Mac! Thank you!
I apologize for the delayed response.
I've received a reply from the publisher.
They confirmed it's possible to implement this for the Mac version too.
I'm really hoping you'll enjoy my game...!
OMG it's ok! And thank you so much!!! I'm really happy! I'm sure I'll enjoy your game!
Hello! I'm the developer of Valentine in Bitterness.
I've made the game playable in your browser, so I’d be really happy if you could check it out whenever you have some time🌸
Hi! This game is so cute so far. I'm wondering when the r18 explicit version will be released?
Hello! Thank you so much for your interest in my work!
The R18 version is being translated by the publisher, so I’m not sure when it will be finished…
But as soon as it’s complete, I’ll make an announcement right away!
I'm so sorry to ask,
is this the full version and I can purchase the NSFW patch via website? I promise I'm not this slow all the time.🥺🖤Just kidding, I reread the post another time. WOOOHOOOO, I'M SO EXCITED. 😻. Thank you for making an R18 Otome! I love them so much. I've got over $200+ in "vintage" noughties era R18 Otome games.
I’m so happy that you’re interested in my work!!
The patch will be distributed for free! Right now, we’re just waiting on the publisher’s translation.
R18 Otome games are wonderful, aren’t they? I’d love to see many more... 🌸
hi! im really interested in the game, but im dont really get how the game works. so in short, the itch.io download is just a demo, n the full version on steam isnt out yet. if i want to play the full paid version contains explicit adult sexual content, i have to wait right? cuz i cant find the free “complete content” patch in the game website :( thank you
Hello! I’m really happy you left a comment—thank you so much for your interest in my game!
Actually, the demo already ends at a nice stopping point, but the Steam version continues the story much further—and it will be 18+ (adult content).
I’m sorry, but the release is still in translation, so I need just a bit more time...
Right now we’ve commissioned Hanabi Games for the translation, and as soon as it’s finished we’ll share the patch URL. So at the moment, we haven’t distributed the patch yet.
Thank you!! It’s a taboo story, but I’ve poured my heart into it. Please look forward to the Steam version until it’s released!