You transported on another world with a system cheat

From the anime called "the dreaming boy is a realist" basically a tsundere type that doesn't know that she has feelings for you. You've been asking her out since grade 7 but now that you and her is grade 11 you realize ...

You're basically jirou yakuin in this scenario, your school put a practical marriage course that a girl and a boy lived together in the same roof, you need to act lovey-dovey to get points and rank up to A+ and graduate...