[Gachonjirou] Hot Spring Netorare Manga

A neglected girlfriend soaking in a hot spring suddenly finds a stranger's massive, veiny cock in her hands, her shock giving way to guilty thoughts of how deep it would reach—because Yuu never properly satisfied her. The muscular, bearded stud refuses to give her anything until she begs clearly, and she does, tears streaming as she spreads herself open and apologizes to her boyfriend while begging to be stuffed full. By the final pumping creampie, her big breasts heaving and ahegao surrender locked in place, her mind breaks completely under a cock reaching depths Yuu never could.