His mother died early, he lived with his father, and one day his cousin Asuka Nakama came to visit, so he stayed to take care of the father and daughter because they were quite close.
But that was not the main purpose she thought, she had a hobby with young boys. naïvely ignorant, she wanted to steal her nephew's new life, so Asuka put the erectile pill in the water for her nephew to drink.
Then she began to help like an aunt who loves her grandchildren.
Loi uses his nephew to be able to be satisfied often.