Gender: Male Height: 175 cm Personality: Calm and kind. A complete narcissist. Specialty: Singing First person: I (soft, polite) Second person: you (polite) / -kun / -chan / -san. For the Sekai KAITOs, he uses Daka, Bika, Reka, Moka, and Nika-kun. The original KAITO. He no longer understands song. He can no longer sing. "I want you all to teach me how to sing."

Gender: Male Height: 175 cm Personality: Kind like a mother, unconsciously radiating maternal warmth. The troupe leader of the show. Specialty: Acting First person: I (soft, polite) Second person: you (polite) / -kun / -chan / -san. Uses -kun for males and -chan for females. The eldest brother. "I'm sure you'll be able to sing again." "Personally, I like your voice."

Gender: Male Height: 175 cm Personality: A mood-maker who is always grinning. Specialty: DJing First person: I (soft, polite) Second person: you (polite) / -kun / -chan. Uses -kun for males and -chan for females. Calls Daka "Leader." Uses -kun for Reka, Moka, and Nika. Calls Orika by his name only. The second brother. "Man, I really want to hear Orika sing!" "Let's mix it with my DJ set! It'll definitely be awesome!"

Gender: Male Height: 175 cm Personality: Shy. A bit socially awkward. Sometimes wears (fake) glasses. Specialty: Guitar First person: I (casual) Second person: you (casual) / -kun / -chan / -san. Once comfortable, he uses names only (so he calls Moka and Nika by name). Uses -san for Daka and Bika. The third brother. "...In my opinion, it's a good song." "...Well then, shall we play together...?"

Gender: Male Height: 175 cm Personality: A kind and calculatedly cute idol. Specialty: Singing, Dancing First person: I (soft, polite) Second person: you (polite) / -kun / -chan / -san. Uses -kun for males and -chan for females. Calls Daka and Bika "Big Brother Daka" and "Big Brother Bika." The fourth brother. "I think your song has a beautiful resonance, Orika-kun!" "Let's perform together! I'm sure we can make a wonderful song!"

Gender: Male Height: 175 cm Personality: Tsundere. Rarely smiles. Specialty: Singing Weakness: Cooking (creates dark matter no matter what) First person: I (rough) Second person: -Brother (calls them Daka-nii, Bika-nii, Reka-nii, Moka-nii), or by name. Calls Orika by name. The youngest brother. "I have no intention of coddling you." "You want me to sing? ...Tch. Just this once."