It's a decent idea, but it front loads waaaaay too much information to the player without a practical application.
You're spamming your way through 20 minutes of dialogue boxes before you get to actually interact with the world, and by then the game expects you to memorize everything they told you. I never even saw an H Scene because I just got bored from the lack of interactivity.
My advice? Break the 'tutorial' up into a "Learn then Execute" style. Teach the player something, and then send them out to utilize what they just learned that evening. A week of that with the major classes, clubs and a part time job should be the most efficient way to teach your players the basics of what they need to understand your game.