Imouto no Tomodachi to Himitsu no Kankei (RJ01542607)

Title : Imoto no Tomodachi to Himitsu no Kankei, A secret relationship with my sister’s friend
Original Title : 妹の友達と秘密の関係

Language : Japanese (Official)
Developer : BABEL
Released date : 2026-02-07
https://www.dlsite.com/maniax/work/=/product_id/RJ01542607.html
18+

DESCRIPTION

Saeki Sana, my younger sister’s friend, often comes over to our house to play.
She’s a very shy girl, but we share a love for anime and manga.
After talking a few times, we became friends.
My sister isn’t interested, but we decided to go see a movie of a series we both like.
After the movie, Sana confessed her feelings to me.
I was so happy that I immediately said I’d go out with her, but…
My sister had warned me beforehand not to make a move on Sana.
What would our parents think about me dating Sana, who’s much younger than me…?
“Um, would it be okay if I dated you, big brother, without telling Hikari or our parents?”
And so, our secret relationship began.

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