Okaa-san wa Ore Senyou! ~Anata no Hajimete o... Okaa-san ga Moratte A-ge-ru by Willow Soft jap - Adult Sex Game

Kokhei fills the entrance exams to the university. School pre-training does not help much, since he initially did not want to study. He lives alone, tries to be independent and works several days a week to support his financial needs. But this kind of work only allows him not to slide into a complete NEET.
Yuiko, Kokhei’s young, energetic mother, always comes to visit him to help around the house and give moral support. Like a caring mother, worried about her son's condition, Yuiko hires him as a personal tutor to help Kokhey go to university.
Classes are now starting ... but it looks like Kokhei wants to know something else.