I think the good ending patch was just an April Fool's post by the creator last year. :D
Thing with this game is if you played it like a normal Adult VN, it will punish you in the end. My first and only play through was I went full white-knight respecter of women so basically what happened is, I only get to have sex with Mio. xD
From what I've read before, you have to be super degen and kill someone to get it on with Gloria.