First of all, the game was really enjoyable. The art style is delicate, and the character backstories, development, and events are very well-written.
One thing that bothers me, though, is that the villains are just total assholes. It feels like they only exist to disgust the player, and honestly, it worked—I was disgusted. Unlike the 'three idiots' who got a plot twist... and man, I want to bang Hanako so bad. Some parts of the story also seem purely designed to gross players out. That wouldn't be a problem if things ended well, like with Sayuri.
I have to say, the story quality dropped in the last chapters. The player suddenly beats the shit out of those three pitiful idiots like I'm the monster, and everything goes to hell. Then, out of nowhere, an old man appears and gives me superpowers while constantly telling me I still don't know what to do with them...
However, this could just be foreshadowing for future updates. I'm still looking forward to it and will definitely be jerking off to this game in the future. Great work!