I can get behind the idea of PC not being Sonic, but actually being an isekai-like self-insert... but if that's the case, why make him a jerk? He thinks with his dick rather than his brains when interacting with the girls—a walking libido with zero chill! Maybe adding some options could help: one for being a nicer person, one for being a bit disinterested, one that tries to act like Sonic's original 'cool' personality, and one that reflects how the PC acts now.
Also, some menus seem to default to PT-BR for some reason and might confuse people. Não quê isso sejá problema pra mim, eu sou BR kkkk. But it does break immersion a little bit.
Still, I get it's an early build (the very first version no less), and there's definitely potential. Wishing the devs the best of luck! Looking forward to seeing where it goes.