To start this manga starts off with guy and girl that like each other but cant say it.
Then the girl goes to the guy she likes best friend for what ever reason and they
star banging after awhile the guy tries to find out why she is weird and he see his
friends banging her he knocks his friend out he bangs her and they say they love
each other. kinda happy ending?

not 100% sure about that ending it might have been darker

any help would be great thanks in advance