Onii-chan Is Done For!

Ab sofort Schwester! Onii-chan wa Oshimai! Oniichan ha Oshimai! お兄ちゃんはおしまい!; ONIMAI: I'm Now Your Sister! ; ONIMAI

Author: Nekotoufu

Onii-chan Is Done For! summary

You are reading Onii-chan Is Done For!, a manga that covering comedy, school life, slice of life. Onii-chan Is Done For! (お兄ちゃんは終わった! , Onii-chan wa Owatta!) is a comedic romantic manga that centers on the chaotic and humorous misadventures between an overprotective older brother and his mischievous little sister. The story follows the titular “Onii-chan,” whose ordinary life is constantly disrupted by his sister's schemes, playful antics, and exaggerated attempts to manipulate situations to her advantage. Onii-chan Is Done For! thrives on comedic misunderstandings, slapstick humor, and the dynamic interplay between the characters, turning everyday scenarios into laugh-out-loud moments. The manga's charm comes from its expressive art style, which emphasizes exaggerated reactions, comedic timing, and lighthearted chaos, while still occasionally delivering sweet, heartwarming interactions that balance the comedy. With its mix of sibling rivalry, romantic undertones, and playful exaggeration, Onii-chan Is Done For! provides readers with an entertaining and engaging slice-of-life experience, perfect for fans who enjoy humor-driven stories featuring quirky relationships and memorable character dynamics.

Status

Ongoing

Last Updated

5 days ago

Onii-chan Is Done For!

Story Overview

This gender-bending comedy follows Mahiro, a reclusive gamer who wakes up one morning transformed into a girl—thanks to his scientist sister’s experiment. Forced to adapt to daily life as “Mahiro-chan,” he experiences hilarious struggles and moments of unexpected growth.

Themes and Story Elements

Identity and Self-Acceptance

The story explores transformation and learning empathy through humor and daily challenges.

Slice-of-Life and Comedy

Everyday moments—from shopping to socializing—become opportunities for laughter and character development.

Why Readers Enjoy It

Fans love its humor, expressive art, and heartfelt portrayal of change, making it both entertaining and surprisingly wholesome.

Onii-chan Is Done For!