Mama Sis ~Okaa-san to Watashi, Docchi ga Ii no?~ / まましす 〜お母さんとわたし、どっちがいいの?〜

After the hero's mother died due to illness, he moved to Tokyo at the request of his father.
His home is the YAYOI Inn Guest House, where Mireille lives and works and looks after him.
Three years have passed since his father left Tokyo without a trace, Mireille became for him like a real mother, enveloping him with care and affection.
But inside they were alone, he lost his mother, and Mireille lost her husband a long time ago.
And to make up for each other's loneliness, they crossed the line.

- This is not treason. We are not blood relatives. Our age is quite far from each other, and I am still a student.
This is why it is so important for you to have a good understanding of what you are getting yourself into.
There are many things you can do to make your life easier. .......

- And yes, I forgot to say Mireille has two daughters - the older Misa and the younger Miu.
They also live together in this house and it so happened that they got caught !!! how Mireille and I had sex.
- It's disgusting! Pervert! they shouted

I honestly don't care what they think of me. I thought so and I was naive ..........