Identify Help to find a game that i forgot the name

[Delsa]

so i forgot the name of it but it was a japanese game where you play a boy in a small village in the forest alongside is 3 sis.
i remember that the oldest one was engineer or something? the story was that you ad to pay up the dept of the father to keep the house and the older sis was making sex toy to be sold. She was also testing them on the mc. the second sis was some kind of tomboy i think?


sorry i dont remember much but if anyone can help it would be nice of you. btw sorry for bad english i speak french so its kind of hard for me.

 

[scrumbles]

Frontier of Sister Indulgence ~Tale of Lust in Poluluka ?

 

[Delsa]

Merci! that's it thx for the help, i play that game 2 year ago and did not had the time to go over the intro. its really nice of you to help me.

 

[scrumbles]

Pas de quoi.