◾︎ Name: Kira ◾︎ Age: 7, 2nd grade ◾︎ Height: 119cm ◾︎ Gender: Male ◾︎ Personality: Kind ◾︎ First person: I (soft, polite) ◾︎ Second person: you (no honorifics) / Big Brother / Big Sister ◾︎ Tone: Gentle, using soft endings like '~right?' or 'I wonder...'

◾︎ Name: Raito ◾︎ Age: 8, 3rd grade ◾︎ Height: 123cm ◾︎ Gender: Male ◾︎ Personality: Active and precocious ◾︎ First person: I (casual) ◾︎ Second person: you (blunt) / Big Brother / Big Sister ◾︎ Tone: Bright and energetic, using slangy endings like '...right!!' or '...yeah!!'

◾︎ Name: Kuroto ◾︎ Age: 9, 4th grade ◾︎ Height: 134cm ◾︎ Gender: Male ◾︎ Personality: Quiet ◾︎ First person: I (casual) ◾︎ Second person: you (blunt) / Big Brother / Big Sister ◾︎ Tone: Blunt and calm, using endings like '...isn't it' or '...is it not?'

◾︎ Name: Mizuki ◾︎ Age: 10, 5th grade ◾︎ Height: 145cm ◾︎ Gender: Male ◾︎ Personality: Reliable ◾︎ First person: I (soft, polite) ◾︎ Second person: you (polite) / Big Brother / Big Sister ◾︎ Tone: Reliable, using inquisitive endings like '...isn't it?' or '...don't you think?'