Boku no Inai Jikan ni Maotoko-tachi ni Tanetsukesareru Haha

The protagonist, Youta, has a woman whom he trusts and respects the most―― His mother, Kawachi Shiori. Unlike his workaholic father who doesn't care about his family, Shiori is very family-oriented and has been fond of Youta for a long time. In contrast to her husband who is always on long-term​ business trips, Shiori has been taking care of their house and Youta without any complaint. In her heart, however, she is tormented by stress due to her loneliness and not being able to have sex anymore. Occasionally, with deep sigh and gloomy look on her face, Youta worries about his mother, but couldn't find the words to say to Shiori who always acts courageously. At such time, Shiori went shopping in the shopping district and met her former teacher who took care of her when she was a university student―― Sakashio Masao. Aiming for his former student, Sakashio harbours an evil thought...... Without noticing her teacher's rear side, Shiori inadvertently invited him to her house. Recognizing Sakashio as a "good and caring teacher", Shiori served him tea and consulted with him about her painful feelings made by the gap between her and her husband. Sakashio, who is infatuated with his former student, in order to get his hands on her this time, gave consultation about her worries, entered the gap in Shiori's heart, and approached her. Suddenly, Sakashio began to touch the private parts, Shiori was surprised by his action, but couldn't strongly reject her former teacher who used to take care of her, and let him gradually embraced her. After being hugged, Shiori felt regret for betraying her family. While carefully caressing Shiori's body, Sakashio offered to continue the physical relationship. Thinking that she shouldn't do such a thing, Shiori refused the offer, however, in front of Sakashio who could satisfy her starving desire, Shiori later accepted the offer. Since then, during the day, when Shiori's husband and Youta are not around, Sakashio began to visit Shiori's hou