Yeah the same for me. The VN part seems to have some good potential with nice renders and some "I want to know more" girls: and it appears you might have some real choices, which is nice (I don't like the idea of flirting with the students when you are the teacher, for example. Yeah I'm weird, sorry. At least in my first run of a game where i don't want to be an asshole).
But the sandbox part is currently wrong in my opinion: no map, a lot of useless clicks, a bad quest menu design, no explanation for the pretty heart of devil heart in the quest menu, etc. The transition between the VN part and the sandbox part is far too brutal. Maybe add some contextual help in future builds, and maybe a "fake" quest to teach your users how to play that part? I sincerily dropped the game when I arrived there. Then I saw that there should be a VN mode sometime, so maybe i'll wait a few years.
Or would it be possible to show the quests like a weekly agenda? To clearly see when, where and what you must do. With colored tags for the different characters, and the possibility to easily drop all the quests linked to a character you don't want to get involved with. That would be nice for most of sandboxes games, I think.
Edit: and also when the sandbox starts, you should add what is mandatory for the MC: does he have to go teach every day? Does he have to eat or shower or is it automatically done? That kind of stuff.