Are You Listening? (Soramafu) [COMPLETED]

So this is another soramafu fanfic I have done, en-joy!! Not oneshot. This is another long story!! Soraru and Mafumafu are from different worlds, at least that's what they say. One particular white-haired guy is a smart person, and yet manages to look cute. As opposed to Soraru, who works in a tattoo shop, and...