I played it for the second time and I can say I love it. I feel like it has a really good story, I love the effects and sounds it makes when people speak (they remind me a lot of the a certain Blue Lawyer video game...).
Personally, Hayato reminds me a lot of a childhood friend: his physique, his skin tone, and they even play sports.
The only thing I'd like to see added is for Hayato to have more body hair. I like the hair on his armpits and pubes, but it would be much better if he had hair on his legs and some on his chest. But again, that's personal; so far, I've loved it.
Excited for Part 2! I wish I could support the project more.