[Tomoya](https://anilist.co/character/163628)'s father.

Episode 1 & 2 - Ore ga Mita Koto no Nai Kanojo 
A couple in love, thinking about marriage, have a tough decision ahead of them. They might have to move in with Tomoya's father. However that isn't even the start of the problem, upon showing up at his father's house, Kanako realizes that not only does she know his father... but she has slept with him... multiple times. 
 
Episode 3 - Delivery Sex 
All she wanted was for her son to help her move... but apparently he had "club activities". So he enlisted the help of one of his seniors who works for a moving company. Unfortunately however, she doesn't have any money... so the only way to pay... 
 
Episode 4 - JK Bitch no Renai Soudan 
The biggest slut of the class just had to show up when I was trying to get my thoughts together, and while I was dealing with such embarrassing stuff as well! 
 
Episode 5 - JK Mama no Shikentaisaku 
Kawai is likely to fail her final exams, so at Fujimaki's suggestion, she invites him over to her house to help her study. However, Kawai prefers to spend more time on sex activities than studying. Ayako, Kawai's mother, wants her daughter to study hard so she proposed Fujimaki to have his time for sex with her instead. 
 
Episode 6 - Oyako no Omoi 
Her son comes home after being bullied, but she had to hear this from one of his classmates... what can she possibly do?

Sure, she may be married... but sharing is caring! 
 
(Source: JList)
 
Contents:
 
1. Ore ga Mita Koto no Nai Kanojo (俺が見たことのない彼女, A Woman Like I'd Never Seen Before); Electronic doujinshi 
2-3. Delivery Sex (デリバリーセックス); Comic Sigma 2017-01, electronic version of "Delivery Sex" omake 
4. JK Bitch no Renai Soudan (JKビッチの恋愛相談, High School Slut's Love Consultation); Comic saseco Vol. 3 
5. Oyako no Omoi (母子の思い, A Mother's Love); Comic Tenma 2016-03 
6. Yukino-sensei no Seikyouiku (雪乃先生の性教育, Mrs. Yukino's Sex Education); Comic saseco Vol. 1 
7. Nigate na Doukyuusei (ニガテな同級生, Intolerable Classmate); Comic Tenma 2015-10 
8. JK Mama no Shikentaisaku (JKママの試験対策, High School Mom's Study Plan, High School Girl's Mommy's Exam Preparation); kakioroshi

A couple in love, thinking about marriage, have a tough decision ahead of them. They might have to move in with Tomoya's father.
However that isn't even the start of the problem, upon showing up at his father's house, Kanako realizes that not only does she know his father... but she has slept with him... multiple times. 
 
Note: A live-action AV adaptation (URE-051) was released on September 7th, 2019.

Makoto Tagawa