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My Friend's Little Sister Has It In for Me!

友達の妹が俺にだけウザい

Tomodachi no Imouto ga Ore ni dake Uzai

Binge-ready

Finished airing — 12 episodes, ready to binge.

Format: TV
Season: Fall 2025
Studio: BLADE
Based on: Light novel
Episode length: 23 min
Started: 5 Oct 2025
Ended: 21 Dec 2025
Score: 64/100

Comedy Romance Slice of Life Heterosexual Love Triangle Tsundere Fake Relationship Female Harem Otaku Culture Software Development Acting

For high schooler Akiteru Ooboshi, the whole youthful experience thing—like fun, friendships, and even having a girlfriend—is a complete waste of time. So when his best friend’s sister, Iroha Kohinata, keeps teasing him, Akiteru naturally finds it annoying. She practically lives in his room, she’s always on his bed, she’s just a raging storm of clinginess! Why is she only annoying around him?! (Source: Crunchyroll)

Where to watch

Crunchyroll ↗ Trailer ↗

Opening and ending songs

Opening Uza Kawaikute Nani ga Warui! Karubi Akami (episodes 1-4, 6-) Watch ↗
Ending Hoshi no Kodou Lam Kohana (episodes 1-) Watch ↗

Song data from AnimeThemes.

Source material

My Friend's Little Sister Has It In for Me! ↗ · 友達の妹が俺にだけウザい

Novel · Still publishing · 2019

Source: AniList and MangaDex (publication details only).

Credits, releases and news

Staff

Director: Kazuomi Koga
Original creator: Ghost Mikawa
Series Composition: Tōko Machida
Script: Tōko Machida
Character Design: Katsuyuki Sato
Music: Hanae Nakamura, Kanade Sakuma, Tsugumi Tanaka
Art Director: Hisae Arimoto
Chief Animation Director: Motohiro Taniguchi, Tsukasa Sorimachi, Guonian Wang