My Friend's Little Sister Has It In for Me!
For high schooler Akiteru Oboshi, 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?!
Seasons
Season 1
12 Episodes • 2025
Episodes - Season 1
1. My Friend's Little Sister Has It In for Me
24mAkiteru just wants to work toward his future, but his friend's little sister won't allow him any peace.
2. The Cousin I Haven't Seen in Years Is Cold to Me
24mNow that Mashiro has moved to his school, can Akiteru manage to make her open up to him?
3. Only I Can Be a Pain to My Uncle’s Daughter
24mAkiteru decides to throw a welcome party for Mashiro, but first he must convince her to attend.
4. My Friend's Little Sister Might Be a Delinquent
24mAkiteru and Iroha recall how they first met.
5. My Friend's Little Sister Keeps Getting Close to Me
24mA look back at how Iroha came to be the voice actress for 05th Floor Alliance.
6. My Friend's Little Sister Has It In for My Friend's Enemy
24mWhile at the mall with Mashiro and Iroha, Akiteru learns why Mashiro left her old school.
7. The Girl Who Confessed to Me Is Cold to Me in Reality
24mAkiteru tries to give a proper reply to Mashiro's love confession, but she's brutally cold to him in person.
8. Everyone I Know Is Being Weird With Me
24mSumire asks Akiteru for help with a problem that could endanger her future with 05th Floor Alliance.
9. My Fake Girlfriend Gets Tough When I Respond To Her Confession
24mAkiteru and Iroha head to Otoi's studio to record for the game, but Iroha has ideas of her own.
10. My Friend's Little Sister Only Gets an Apology from Me
24mAkiteru must clear the air with Iroha to keep 05th Floor Alliance running smoothly.
Top Cast
Haruki Ishiya
Akiteru Oboshi (voice)
Sayumi Suzushiro
Iroha Kohinata (voice)
Tomori Kusunoki
Mashiro Tsukinomori (voice)
Soma Saito
Ozuma Kohinata (voice)
Kana Hanazawa
Sumire Kageishi (voice)
Available on: HTB, tv asahi, Nagoya TV, KBC, ABC TV, NCC, OAB, ABA, Niigata Television Network 21, khb, KFB, HOME, KSB, Kagoshima Broadcasting, Iwate Asahi TV, Akita Asahi Broadcasting, Yamagata Television System, Shizuoka Asahi TV, Asahi Broadcasting Nagano, Hokuriku Asahi Broadcasting, Ehime Asahi TV, Yamaguchi Asahi Broadcasting, Kumamoto Asahi Broadcasting, Ryu-Q Asahi Broadcasting
