Arthur doesn't understand the girls around him. He doesn't understand why Camile, the most popular girl at school, is always unbelievably kind to him. He doesn't understand why that Ashly, the girl rumored to be the shyest girl in the whole school, is somewhat not so shy when she talks to him. Practically he's dense around their feelings and Arthur knows this, for him, it's painful, stupid, and cliqued. And thus he did something that a normal human being would do.
Go to a bookshop, buy porn, then ask his virgin friends for pieces of advice.
But fortunately/unfortunately for him. He stumbled upon an Incubus, and this incubus led him to a journey. A journey of wet dreams.
Oh, and he has a childhood friend.
(Does this count as a Synopsis? I don't know)
