Current rating should 4.5/5 but will round to 5.
Pros:
Good ambience music.
Gorgeous Female characters. Noone is out of propotion.
Good amount of content for being the very first of the game.
All choices have some distinct implications.
Sister's friend is super hot!
Suggestions/To Improve:
Grammerly mistakes here and there.
Jim' friend can have wider role?
Route forJim to have both Jun and Angela?
Blackmail route has potential to go very perverse.
MC should have one pure harem route if possible.
Uncle character should be replaced or another character can be added for mom's love alpha interest/rival for MC.
Overall, solid potential. A promising game for NTR fans, not so much for non-NTR ones at the moment as the content is low for those routes.