Part 1:
Ren, a young man who works at a bar, finds a seriously injured man outside and takes him in.He only helps out of kindness, but the man develops an intense attachment to him. The unnamed man takes Ren back to a house, confines him there, and gives him relentless pleasure...

Part 2:
Ren tries to escape from his confinement, but he is captured and confined again. Even though Ren was able to withstand "punishment" before, now his colon is being played with a dildo, and his prostate with a vibrator. His sensitive body is being pushed to its limit...

After:
Through repeated sessions, Ren's body has reached its limit, and it is now so sensitive that even the slightest stimulation causes him to climax. He can't be satisfied without Itsuki's dick inside him. He begs for penetration everywhere, including the bathroom and the couch. Putting his dick in his mouth, he drowns in lust...