[Doronko Yuuyake] Sensei to Goshujin-sama Hoshuu [Yuuta's Blog]

Supplementary lessons turn into total ownership as a shaved-headed schoolboy leads his naked classmate around on a collar and leash, ordering him to spread himself for a phone camera and mocking how perverted he looks. On hands and knees, Daisuke begs for forgiveness with mounting desperation, pledging eternal loyalty and even offering to drink his master's piss just to be forgiven. This is only the first half of Daisuke's descent, with the story promising his complete transformation into a sex slave in what follows.