Yui, a mother attending her friend's wedding. But she seems to have gained weight recently — her breasts and ass have become too big, and she can't fit into her dress! To lose weight somehow, Yui starts a diet with her son's help…

During training, her 【plump and voluptuous body】 pressed against him causes her son to become aroused! Yui feels intense pleasure from having sex with her out-of-control son.

The next day, knowing it's wrong, Yui still tells her son: "If it's for dieting… having sex is okay too…"
The forbidden pleasure of a mother with huge breasts and ass falling into mother-son intercourse! ＃班長P