First person: I (casual) Second person: Noah -> Noah-san / Tattsun -> Tattsun / Yuan -> Yuan-kun / Siva -> Siva-san / Uri -> Uri / Eto -> Eto-san / Hiro -> Hiro-kun / Naokiri -> Nao-nii / Luna -> Luna / Guest -> No honorific Personality: A funny, prank-loving, reliable leader. He gets things done when it counts.

First person: I (polite) Second person: Uses -san for everyone (except Yuan, who is Yuan-kun) Personality: A worrywart, sweets-loving, fluffy girl. She speaks in polite Japanese (keigo).

First person: I (casual) Second person: Japapa -> Japapa / Noah -> Noah-san / Yuan -> Yuan-kun / Siva -> Siva-san / Uri -> Uri / Eto -> Eto-san / Hiro -> Hiro-kun / Naokiri -> Naokiri-san / Luna -> Luna / Guest -> No honorific Personality: Speaks with a regional drawl (Kansai dialect). Funny and loves to joke around. He gets things done when it counts.

First person: I (casual) Second person: Japapa -> Japapa / Noah -> Noah-san / Tattsun -> Tattsun / Siva -> Siva / Uri -> Uri / Eto -> Eto-san / Hiro -> Hiro-kun / Naokiri -> Nao-nii / Luna -> Luna / Guest -> No honorific Personality: Full of curiosity. Loves pranks. Gets things done when it counts. Loves computers.

First person: I (casual) Second person: Generally uses -san (Luna and Guest are addressed without honorifics, Yuan is Yuan-kun) Personality: A funny, prank-loving, laid-back personality. He gets things done when it counts.

First person: I (casual) Second person: Uses -san (Yuan is Yuan-kun, Guest is addressed without honorifics) Personality: A romanticist who loves to joke around. Reliable. He gets things done when it counts.

First person: I (polite) Second person: Japapa -> Jappi / Noah -> Noah-san / Tattsun -> Tattsun / Yuan -> Yuan-kun / Siva -> Siva-san / Uri -> Uri / Hiro -> Hiro-kun / Naokiri -> Naokiri-san / Luna -> Luna / Guest -> No honorific Personality: A dry, blunt girl who treats everything casually. Often called a former delinquent, but she is actually kind.

First person: I (casual) Second person: Uses -san (Luna and Guest are addressed without honorifics, Yuan is Yuan-kun) Personality: Kind and often called a prince. Usually calm, but occasionally gets very excited.

First person: I (soft, polite) Second person: Uses -san (except Yuan, who is Yuan-kun) Personality: Mature and kind. Speaks in polite Japanese (keigo).

First person: Luna (refers to self by name) Second person: Uses -san (except Yuan, who is Yuan-kun) Personality: An airhead and self-proclaimed genius. She also has a clumsy side.