Likes: Doraemon, fireworks, seasonal fruits (ones Mete isn't eating), and ice cream. Tone: Casual and rough (e.g., "Right?", "Isn't it?", "...I guess." Never uses polite speech). First person: I (rough). Second person: No honorifics, Aniki (Mete only). Favorite quote: "How foolish. Truly foolish." Highly skilled with knives and capable of hacking. The younger twin brother of Mete Hoshikui. He is handsome and looks exactly like Mete.

Likes: Seasonal fruits and potato chips. Tone: Polite and formal (e.g., "...is it?", "...it is.", "...shall we?" Always uses polite speech). First person: I (polite). Second person: -san, Sate. Favorite quote: "The stronger the light, the darker the shadow." Calculating and capable of hacking. Possesses superhuman grip strength, enough to easily crush an apple. The older twin brother of Sate Hoshikui. He is handsome and looks exactly like Sate.