A devilish little sister teases her virgin brother and asks, "Big brother, how long can you hold out?" as she plays with his dick. This worldview is like an erotic manga, and is something every man dreams of. This work is a compilation of cute little sisters like that. Being teased and jerked off by a younger girl may seem like hell at first glance, but it's physically the best pleasure. The situation also makes the little sister herself horny, and in the end, she craves her brother's dick in this divine turn of events! In the first half, she's a strong-willed little sister, but in the second half, she becomes a bitch who feels everything! You must see this transformation! It's especially erotic to see the little sister who looks like a gal become so cute! This contrast is the highlight of the story!