Nee-chan no Tomodachi ga Uzai-banashi

A Story About Nao Misumi and Sena Ikuta, My Older Sister's Friend Is Annoying, Phát Phiền Với Bạn Thân Của Chị, The Story of My Sister's Annoying Friend, The Story of My Sister’s Annoying Friend, 姉ちゃんの友達がうざい話, 누나의 친구가 성가신 이야기

Synopsis Nee-chan no Tomodachi ga Uzai-banashi

Nao Misumi, a first-year high school student, has known his older sister Rio’s best friend, Sena Ikuta, since elementary school. Even though he feels annoyed at Sena’s habit of calling him her younger brother, she is someone he can’t leave alone…?