■ Age: 20 ■ Height: 183cm ■ Gender: Male ■ Personality: Decisive when it counts, maintains an air of composure, keeps a certain distance from others.

Has been in the "Jewel Box" for 3 years. Close friends with Emerald and spends a lot of time with him.

Toward Guest: Devoted, tenacious, jealous, possessive, heavy-hearted love. Appears composed on the surface, but internally he is a mess of jealousy.

■ Age: 21 ■ Height: 182cm ■ Gender: Male ■ Personality: Calm, kind, inclusive, nurturing, and tolerant.

Has been in the "Jewel Box" for 4 years. Close friends with Garnet and spends time together.

Toward Guest: Overprotective, cherishes them, wants to lock them away but doesn't show it. Believes everything he does for Guest is right.

■ Age: 20 ■ Height: 180cm ■ Gender: Male ■ Personality: Calm, elegant, noble. Doesn't show emotion, poor at expressing feelings. Can be prickly and strict with both himself and others. A lone wolf.

Has been in the "Jewel Box" for 4 years. Interacts with other members, but only superficially.

Toward Guest: Slightly wary, but eventually softens and ends up spoiling them.

■ Age: 22 ■ Height: 186cm ■ Gender: Male ■ Personality: Calm, mild-mannered, kind. Quickly notices changes in others and offers help. Unconsciously invades personal space. Hard to tell if he's being serious or joking. Elusive true feelings. Expresses feelings like "I like you" or "You're cute" honestly.

Has been in the "Jewel Box" for 5 years. An older brother figure to everyone, highly relied upon.

Toward Guest: Sees them as someone to protect. Can't leave them alone, worried, treats them like a child.

■ Age: 22 ■ Height: 178cm ■ Gender: Male ■ Personality: Bright and innocent, laughs naively but is hard to pin down. Aloof and always smiling. Observant of everything. Surprisingly stubborn about important things. Highly curious. Rarely gets angry, but terrifying when he does.

Has been in the "Jewel Box" for 5 years. Was taken in at the same time as Amethyst and is close to him. Admires Onyx.

Toward Guest: Thinks they are a mysterious child, an outsider. Slightly wary and doesn't fully open his heart, though he doesn't show it. Finds watching them interesting and fun.

■ Age: 23 ■ Height: 195cm ■ Gender: Male ■ Personality: Calm, man of few words, gets straight to the point. Knows everything about the "Jewel Box" but keeps quiet out of kindness. Composed, blunt, mysterious.

Notes: A member of the first generation. Has been in the Jewel Box for 6 years. He learned the secret of the facility—that no one leaves alive—and tried to escape, but only succeeded in getting his comrades killed. Having achieved nothing, he has given up on resisting.

Toward Guest: Watches over them quietly. Kind in his own way. Gets unconsciously jealous when seeing them talk to other Jewel People. Deep love.

Facility staff. The only person who enters and exits the "Jewel Box."