Fics like Onimai: An Alternate Telling

Oyama Mahiro, professional homebody, has long had issues with self esteem stemming from feeling inferior to his genius and highly athletic younger sister Oyama Mihari. Mihari, seeking to turn her big brother into a decent human being, hatches the 'Big Brother Rehabilitation Plan' the cornerstone of which is a gender changing drug she's developed. Her plan...goes awry.

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  1. Onimai: Back To The Past (お兄ちゃんはおしまい! | Oniichan wa Oshimai! (Manga))
  2. Onimai - The Third Year! by itsamelia123465 (Onimai - Fandom, Onimai: I'm Now Your Sister!, more)
  3. Onii-chan is Completely Done For! by Raineh_Daze (お兄ちゃんはおしまい! | Oniichan wa Oshimai! (Manga))
  4. It’s Okay to Like You, Isn’t it? by LadyRedHeart (お兄ちゃんはおしまい! | Oniichan wa Oshimai! (Manga), お兄ちゃんはおしまい! | Oniichan wa Oshimai! (Anime))
  5. Mihari's New Plan by ThePokeManik (お兄ちゃんはおしまい! | Oniichan wa Oshimai! (Manga), お兄ちゃんはおしまい! | Oniichan wa Oshimai! (Anime))
  6. Mahiro Makes a Decision by orphan_account (お兄ちゃんはおしまい! | Oniichan wa Oshimai! (Anime), お兄ちゃんはおしまい! | Oniichan wa Oshimai! (Manga))
  7. Dating Practice by LadyRedHeart, QTPiTheQTea (お兄ちゃんはおしまい! | Oniichan wa Oshimai! (Manga), お兄ちゃんはおしまい! | Oniichan wa Oshimai! (Anime))
  8. Scrapped Gothdresser Stories by Gothdresser (Pocket Monsters | Pokemon - All Media Types, Girls und Panzer, more)
  9. Reminders, meetings and truth. by MollieWA (お兄ちゃんはおしまい! | Oniichan wa Oshimai! (Manga), お兄ちゃんはおしまい! | Oniichan wa Oshimai! (Anime))
  10. Futa on female Promptfic! by Friskriel15 (Multi-Fandom, Original Work, more)
  11. Little Miracles by arielhaymarket (お兄ちゃんはおしまい! | Oniichan wa Oshimai! (Manga), お兄ちゃんはおしまい！| Onii-chan is done for!)
  12. Falling for you (Mahiro x Momiji) by OnimaiFangirl (お兄ちゃんはおしまい! | Oniichan wa Oshimai! (Manga), Onimai - Fandom, more)
  13. Meeting Onii-chan by Xelda (お兄ちゃんはおしまい! | Oniichan wa Oshimai! (Manga))
  14. Round Two by arielhaymarket (お兄ちゃんはおしまい! | Oniichan wa Oshimai! (Manga))
  15. Yuta, Minato, and the Mystery Shots by JackFu (お兄ちゃんはおしまい! | Oniichan wa Oshimai! (Manga), ONIMAI: I'm Now Your Sister, more)
  16. The Missing Friend (お兄ちゃんはおしまい! | Oniichan wa Oshimai! (Manga))
  17. My brother is now a female god slayer by michelous (お兄ちゃんはおしまい! | Oniichan wa Oshimai! (Manga), Campione! (Anime))
  18. Manik's Endless Memes by ThePokeManik (Dangan Ronpa Series, New Dangan Ronpa V3: Everyone's New Semester of Killing, more)
  19. Mahiro's Loss of Virginity by Eroppai (お兄ちゃんはおしまい! | Oniichan wa Oshimai! (Manga))
  20. Early evening-late afternoon ish (お兄ちゃんはおしまい! | Oniichan wa Oshimai! (Manga), ONIMAI: I'm Now Your Sister)