So I've gotten this game recently and was able to complete the three main endings along with the secret ending featuring the professor. Is there anything specific I need to do, and do I need to restart and do a new file? I've completed all talk dialogues and dates with all characters. Thanks!...

I've finished the three roues, and other than the credits after each route, there seems to be no true "end" to this game. Is it eternally sandbox, or have I misconstrued when it truly is over?

Add some, please! ^_^