The Little Sister Heroine is a trope common in multiple Japanese media that combines the idea that little sisters are cute and that cute things are to be fetishized. It goes like this: Little sisters are cute, right? And cute girls draw in viewers. And cute can be sexy. Take a few more 'logical' steps down the lines, and suddenly little sisters are love interests in anime, video games and visual novels. It is in fact one of the most popular heroines or love interests in Visual Novels, branching out from there into anime, perhaps surpassed only by the ever-present Tsundere and childhood friend. Like Childhood Friend Romance, it is extremely prone to lampshade hangings.