A Dream,Love and Harem Miscomprehension

Descriptiones a la mode.

What is Dream?

Define Love.

Explain Harem.

Can you answer all of this questions without even thinking for a second?

Well,if you can then good for you.

But not Sylvester Rinosuke Schnell. He misinterpreted the three things for some reason. He likes anime and is an otaku but doesn't know if he love it or not. He doesn't even ever have a dream so he didn't what is this. And he views harem like a sex den.

So a Kami-sama (god) granted his wish:

To be able to be a boyfriend of ALL of his anime favorites.

The catch?

He will be given a mission on every dimension. He has to accomplish the task only for 7 days and while doing the mission, he must make his "anime crush" fall for him.

And if he don't, he will be punished. And what I mean at punish is EXECUTION.

How will he be able to survive the great quest? Who is this "god" that granted his wish? And most of all, is this real or just a dream?