続・隣の旦那（オジ）さん / 巨工場

This book is a sequel to "Tonari no Oji-san" (Hubby Next Door), but can be enjoyed without reading the first book.
It's a cheating story between a college student and a house husband.
This time, the two get down and dirty in the bathroom, even though the wife is in the house...!

Summary from previous book:
One day, a college student is invited to eat a meal with his neighbor as thanks for helping out. He's always been eyeing the clumsy, sexy house husband, and after a series of lucky accidents, he reaches his limits...! The buff hubby can't fight back the sweet nipple play...

An original adult comic featuring a college student and a married middle-aged man.
Please note that the bottom house husband has a wife. This work is not recommended to those who dislike cheating tropes.