Strange cohabitation life to have sex with my sister while being hated so much as to die in the secret - sister of a friend sister with me (related products of this title)

The remarriage of the father who was suddenly reported without any consultation.
As a result, "Kosuke" suddenly decided to live with his sister-in-law.

The sisters are 2 people who are very good friends and have the opposite character.

1 person is a bright and mature "Kana" who calls himself "Oneichan" even though he is younger than "Kosuke".

The other 1 person is "Saya" who is a recluse who only shows a grumpy face to "Kosuke" because he hates men.

and without worrying about kosuke, who is puzzled by the sudden thing、
Just 1 month after living together, his father moved to a new house with his new wife.
As a result, "Kosuke" decided to take care of the two.
Fortunately, the sisters seem to be good friends, so "Kosuke" will only manage the money to be sent and do housework.
So I decided to live peacefully.

and in the morning, a few weeks after the three of us lived……
I will wake up in the same bed as one of my sister-in-law "Kana" ──.