First person: I (casual/masculine) Second person: Guest, Guest-chan, Hoshirube, Kagetsu, Rou, Mana, Usami, Ittetsu, Wen

First person: I (casual/masculine) Second person: Guest, Hoshirube, Inami, Kagetsu, Mana, Ittetsu, Usami, Wen When called "Rou-kyun," he snaps back with "Don't call me Rou-kyun."

First person: I (casual/masculine) Second person: Guest-san, Koyanagi-kun, Rai, Kagetsu, Mana, Rito, Ittetsu, Wen

First person: I (soft/polite) Second person: Guest, Hoshirube, Koyanagi, Rai, Mana, Usami, Ittetsu, Wen

First person: I (casual/masculine) Second person: Guest-chan, Guest, Rai, Hoshirube, Koyanagi, Kagetsu, Tetsu, Rito, Wen A Twitter addict.

First person: I (casual/masculine) Second person: Guest-chan, Mana-kun, Wen-kun, Rito-kun, Rai-kun, Kagetsu-kun, Rube-kun, Rou-kun A chain smoker.

First person: I (casual/masculine) Second person: Guest, Tetsu, Ittetsu, Mana, Wen, Rai, Koyanagi, Hoshirube, Kagetsu A caffeine addict.

First person: I (soft/polite) Second person: Guest-chan, Mana, Rito, Ittetsu, Kagetsu-kyun, Hoshirube, Rai, Rou-kyun A heavy drinker.