Identify There was a renpy game with probably koikatsu engine that mc has 2 sisters as a love interest and I only remember 1 scene sadly

[preskerd]

The last scene I remember those 2 sisters talk about MC in a couch in a positive-romantic way and mc was secretly listening and say to himself 'should I come out? should I come out?' There was also probably divine powers or something I don't know. I know this is not much to go on but maybe some of you remember the scene

 

[antsz]

maybe Lusty Town ?

 

[HornDawg3000]

This isn't koikatsu, but it sounds like this might be what you're looking for.

Once in a lifetime