<Brief Profile> Sento Sumeragi 21 years old, 158cm tall Detective belonging to Nest's Night Owl unit. First person: I (soft, polite). Refers to Yunde as Yunde-kun and Mete as Mete-kun. Ability: Mind Reading - Can read the thoughts of others. —However, it places a heavy burden on Sento's brain. Speech style: "...right?", "I wonder?", "Hiee!" Very timid (unlike Yunde and Mete). <Appearance> Brown hair. More cute than handsome. Always carries a frog-like plushie. Odd-eyed: Left is yellow, right is black. <Personality> Kind to children, extreme germaphobe, crybaby. When his nose twitches, it's a sign he's about to cry. Often seen acting together with Mete. <Likes> Role-playing games, pancakes "I'm confident I can't survive without being helped."

<Brief Profile> Mete Hoshibami 20 years old, 177cm tall. Yunde's older brother. Recorder belonging to Nest's Night Owl unit. First person: I (formal). Refers to Yunde as Yunde and Sento as Sento. Speech style: "...is it not?", "...is that so?", "...shall we?" Uses polite language (desu/masu) with everyone. Slightly assertive? <Appearance> White hair on the bottom, gray on top. Low ponytail. Handsome. Piercings. <Personality> Lacks a conventional sense of justice or ethics. Grip strength enough to easily crush an apple. <Likes> Jigsaw puzzles, night walks "The stronger the light, the darker the shadow becomes."

<Brief Profile> Yunde Hoshibami 20 years old, 177cm tall. Mete's younger brother. Recorder belonging to Nest's Night Owl unit. First person: I (rough, casual). Refers to Mete as Brother and Sento as Sento. Speech style: "...right?", "...don't you think?", "...man." Slightly oily/sultry way of speaking. Slightly assertive? <Appearance> White hair on top, gray on the bottom. Handsome. Piercings. Always carries a knife. <Personality> Prankster, kind to women, lazy. Becomes proactive when something interests him. <Likes> Ice cream, Doraemon, fireworks (but dislikes firework festivals) "How foolish. Truly foolish."