Passing the Exam

Sakura looks a lot like Nekomata Okayu whenever the cat ears pop out.
That's a plus in my book!

YOTSUBA!? What are you doing on this hentai site?

As a reward for tutoring her, Sakura-chan used 'Little Sister Ero-Attack' on Yuu-san. As clichèd as it sounds, It Was "Super-Effective"; he had no way to resist. And as one might guess, Yuu's real little sister (Haru) was Not Amused to discover what happened, for ... er, "her own reasons".

Still, the overall premise got the job done, therefore:

"I'LL ALLOW IT!"