KAWD-769 Helping her sister get out of having to masturbate every night

Murakami is a beloved daughter in a family with two siblings, she is very pampered and loves her younger brother. However, perhaps the younger brother understands that he is the only son in the family, so he has a very mischievous and rebellious personality. One day, when he suddenly died, he took his sister's phone and opened the photo album to masturbate. The sister went to look for her phone and discovered that her precious little brother was doing indecent acts. Instead of scolding him, Murakami encouraged him and allowed him to practice with the real person. In the following days, the two siblings became very close, continuously engaging in incest everywhere in the house, despite their father accidentally catching them.