[ Who knows why they're color-coded? It's a loosely-constructed urban fantasy anime, and at that, Yata sighs. He hates explaining shit. If only punches could clarify everything! ]

Kusanagi-san can explain it better than me.

[ Where are you when he needs you the most, Kusanagi-san? (In England, getting turnt.) ]

Aight... I got it. There's this thing called the Dresden Slate that chooses Kings. Each King's got a really awesome power—Mikoto-san's is the strongest, though! So anyway, like, each King can give other people their powers. Those guys become his clansmen.