Yeah, if you got the credits that's the ending! If you play with Abra once more you'll get a little more backstory.
There are two endings based on whether you go along with Abra's plan or not! They are a little different, but I don't personally think it's worth replaying the entire game.
thank you..
i just wanna say that this is definitely the best hentai ive ever played, and i loved the interactions between the characters. it felt super realistic and likeable. this is one of the games ive played where after finishing the entire game i just stared at the end screen for a while realizing its over :,)
character writing is immaculate and so is the dialogue..