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" ──.

何の相談もなく唐突に報された父親の再婚。
それによって「浩介」はいきなり義理の姉妹と一緒に暮らすことになった。

姉妹は、とても仲が良く性格は真反対の凸凹な2人。

1人は「浩介」より歳下なのに“お姉ちゃん”を自称する、明るくて大人っぽい「佳奈」。

もう1人は、男嫌いで「浩介」には不機嫌顔しか見せない、引きこもり気味の「紗夜」。

そして急のことに困惑している「浩介」に構うことなく、
同居からわずか1ヶ月で父親は新しい奥さんと新居に引っ越してしまった。
その結果二人の世話をすることになった「浩介」。
幸い姉妹は仲が良いみたいなので、「浩介」は仕送りされる金の管理と家事だけをしていよう。
そう決め込んで、平和的に暮らすことにした。

そして三人暮らしの数週間後の朝……
俺は義妹の一人「佳奈」と同じベッドで目覚める事になる──。