Ore to Nakayoshi Shimai no Inma na Himitsu ~Imouto ni Shinu hodo Kiraware Nagara Ane to Sex Suru Kimyou Doukyo Seikatsu~

The father’s remarriage was suddenly reported without any consultation.
As a result, “Kosuke” suddenly lived with his sister-in-law.

The two sisters are very close and have the opposite personalities.

One is a bright and mature “Kana” who calls herself “onee-chan” even though she is younger than “Kosuke”.

The other is “Saya”, who hates men and shows only a moody face to “Kosuke”.

And she doesn’t care about “Kosuke” who is confused in a hurry
Only a month after living together, his father moved to a new house with his new wife.
As a result, “Kosuke” decided to take care of them.
Fortunately, the sisters seem to be on good terms, so Kosuke will only manage the money sent and do the housework.
I decided to do so and decided to live in peace.

And the morning a few weeks after living with three people …
I will wake up in the same bed as one of my sister-in-law, “Kana”.

(MTL)