Katsubou no Manazashi

After his mother deserted them, senior high school student, Reo was living together with his mother's stern ex-lover, the very imposing uncle Shuuji. But 2 months ago, as he dropped by his home on his way with a friend one evening, an event occurred that changed their relationship forever.
His senses were suddenly muddled and when he came to, he was being held by his uncle. Since that day, his uncle demands his body for pleasure and Reo who has been suffering ever since seeks his close friend Kenta’s advice but…

Also included in this volume is a cute story of mutual love between a kouhai and senpai!

(Source: MangaUpdates)