itch.io

Thanks to this, I was able to unlock the achievement. Then things turn differently better when meet the sister in the church beforehand, and when you go to the pond and get the Shed scene. Adds a friendlier dialogue and fear to P
I did Second Church > Skinned Tapir quest > non-fiction > shed > cemetery

saw it in Mark's route

Somewhere along the way, you'll also encounter someone resembling Kouya (or Sousuke from LL) in one of the routes.