Ane Imo Mama no Shasei Kanri - Tsuide ni Kodomo ga Dekichatte mo Ii yo ne - by Incarose - Adult Sex Game

The hero was poor in crisis.
It is caused by the constitution that semen is excessively produced.
It is said that if you leave it alone you may die.
I do not want to die like that kind of pitiful!
Taking such a thought, my sister and sister, and even my mother embark on sex treatment.
At the same time, rules for prohibiting masturbation are established, and the management of the lower body is done by the girls.
"Please leave ejaculation control to you from today!"