Tried the game a 2nd time but I just can't get over my dislike for character models they are not appealing especially the mom, older sister, the mc looks like a midget next to them lol. The way to progress is also a bore, do same event 100 times. i mean the sex scenes are decent from what ive seen but because the characters are weird looking I just can't get into this. Though the cousin and little sister do look decent yet still unnatural.
Are you saying you find the females unappealing just because they're larger than the MC? If so, I'd encourage you to keep playing, because he gets bigger. If you're saying you don't like the art style for the women, I understand; it's sort of a Pixar/anime aesthetic with large expressive eyes, and it's not for everyone if you prefer realism. If you don't like the womens' angular facial features, muscle tone, and voluptuous curves, then to each their own I guess.
As for progression, you don't have to repeat events 100 times. Have you tried clicking on the "Helper" robot in the MC's room? That should guide you to the next task required to advance the story. And that story is very entertaining.