Ore ga Suki nano wa Imouto dakedo Imouto ja Nai
My Little Sister Aims for the Greatest Heights
S1 E2:
The most beautiful girl in school, Himuro Mai, appears before Yuu; after learning that she's actually the light novel author, Enryuu Homura, she announces her desire to study Towano Chikai's talent by forcing her way into his private life.