Couldn't they try fingering or using dildo first??? Or let her ride him or something? Or seek professional help??
Btw, the desc said the woman in the novel ver struggled with cheating so i won't be surprised if the guy actually cheated on her
Thanks for the chapter! Aww looks like it's ending soon. I just found this manga and immediately fell in love with it. Such a shame that Wayama sensei doesn't have more manga published