家庭教師先の教え子・美和と付き合い始めた俺（北山）。だが彼女の母・茉莉奈さんがいつもいいところで邪魔をしてきて…。すると茉莉奈さんに呼び出された俺は「私があなたを射精管理します」とチ●ポを責め出した！どうやら美和に相応しくない男に思われてるようで、何とか我慢しようとするも不本意な射精を何回もさせられてしまった。その後も繰り返し茉莉奈さんに弄ばれ続ける俺は、我慢できず彼女を逆に押し倒して…。

I (Kitayama) started dating Miwa, one of my students whom I tutor. But her mother, Marina, always interfered at the best moments… Then Marina called me over and said, "I'll control your ejaculation," and started tormenting my penis! It seems she thinks I'm not good enough for her, and although I tried to hold back, I was ****** to ejaculate against my will many times. After Marina continued to toy with me repeatedly, I couldn't take it anymore and pushed her down in return…