Hello! Thank you very much for playing and I am so glad you are enjoying it!
First of all, are you sure that your HP/MP bar is decreasing? Because I have not scheduled it to do so at any time. I didn't want this game to be so realistic that it would become tedious or overwhelm the player, so there is no game over. Simply, if you do not study, you will not access rewards that are currently available and that will be in the future.
Regarding a tutorial, I'm afraid there isn't one currently, sorry. However, you can ask me all the questions you have and I will answer you as soon as I can.
About tips on how to study. First of all, do you fail all the exams? If you manage to pass any, what are they? The exams of week 1? Or for another week? The best way to study is, first of all, to go to class every day. Then, when it comes to studying after class, studying with Kokoro in the library is what gives you the most points, without a doubt, although it also consumes a lot of time during the day. To study with Kokoro, talk to her when she's in her room, ask her to follow you, take her to the library and go to an empty table. Then, there is no penalty for studying at night instead of sleeping, so you can do it without problems. You can also check your statistics on the computer in your room to see how many points you have in each subject.

