Well... If you want to write ethical scenarios, you could always use one of the unexplored paths at the beginning (the "going home" choice at the very beginning after Kyou didn't had the courage to engage with Nozomi and the "waiting by the shoe racks" one that has been there since forever). You could easily write a new whole scenario maybe involving Rita or the black haired one (sorry at the moment I don't remember her name) in a more conventional manner (not having to mess with Hiroko and then try to make amends for our actions) since we already know that at least one of them is interested into hypnosis.
I know it can be difficult to write a story, especially when we can't relate to the main character (since I have discovered your game, I have begun writing scripts on AI Dungeon to use the AI to hopefully not get stuck mid way through the story) so I hope this comment will be helpful.
PS: I would like to mention how awesome and refreshing it is to see a hypnosis story actually have real life elements to it (by that I mean when ever you drop facts like "the silent observer" or that "hypnosis can't be used to mind control"). It's sad how disfigured those concepts usually are in most media.