Ane no Tomodachi
Alternative title: The Cutest Girl Closest to Me., 姉のともだち
Story Overview
Asahi's older sister's acquaintance Hinako frequently visits the high school boy's house. She treats him like a little brother—or, perhaps more accurately, a pet—and constantly deceives his mind with her provocative demeanor. An otaku guy who takes on the role of her parent and a girl with a faulty sense of proximity fall in love!