The story and preview images for Episode 9 of the TV anime My Friend's Little Sister Has It In for Me! (JP: 友達の妹が俺にだけウザい) have been revealed. This episode will air on Sunday, November 30 at 2:00 AM (JST), and will later be available on various international streaming platforms.

Episode 9 Story

Has my friend’s little sister stopped being annoying?!

Akiteru, who had become accustomed to Iroha’s usual barrage of playful teasing, is thrown off balance when she suddenly acts quiet and ladylike. The two begin to clash as their interactions no longer align, and during a studio recording session, a small misunderstanding spirals into a heated argument between them...

Introduction

No need for shallow camaraderie, no girlfriend required, and only one true friend is worth having.

That’s how I, Akiteru Ōboshi, live my youth, discarding anything “inefficient.”

And yet, there’s someone who insists on hanging around my room.

Not my sister, not a friend, but an annoyingly clingy underclassman: my best friend’s little sister, Ayaha Kohinata.

“Senpaai, let’s go on a date! …Or did you think I’d say that?”

With the energy of someone who seems to have energy drinks flowing through her veins instead of blood, she invades my bed, teases me with half-hearted seduction, and generally pesters me nonstop. I’m busy every day, but she doesn’t care in the slightest.

Still… why does everyone keep giving me those envious looks?

Apparently, outside of my room, Ayaha is insanely popular, a bright, top-ranked honor student who’s kind, considerate, and the very picture of a pure, elegant girl.

Hey, seriously… if that’s who you really are, then why are you only this annoying to me?

Source : My Friends Little Sister Has It In for Me! Official