Japanese muscle gay adult manga「I Got Turned into My Best Friend's Father's Bitch」

Title：I Got Turned into My Best Friend's Father's Bitch
page：65

When college student Akio Shima is captivated by the huge crotch of his best friend's father, Ryuhei Doko, he is forced to vow to become Ryuhei's sexual desire handler.

Ryuhei teaches Akio oral service and semen drinking…

English edition