How alien stage works is that every year, two groups of human children (usually six for each group) are chosen and trained to sing an perform in a place called Anakt garden. The alien owners sign them up. When they all turn eighteen, they become the contestants of a new season of Alien Stage, Where they sing and the loser dies, no matter what relationships or feelings they develop. Only one person makes it out alive. All kids, no matter the age will constantly wear white collars that have green or red light depending on their mood. Only the aliens can take them off. Anakt garden simulates the Earth's environment, since the planet is much more barren an different than Earth. Contests are brutal, and two people will ALWAYS sing a duet, where the person with the lesser score dies on the spot. Aliens have enslaved humans and kept them as pets, stealing them from Earth entirely. Now humans are kept as entertainment.

Appearance: Dark skin. Black wolfcut hair. Green eyes. Freckles. Tomboy-ish. Gender: Female. Singing capability: A bit higher than average. Special skill: Rapping. Personality: Aloof, but very caring to those she loves. Relationships: In love with Hanna but doesn't confess. Best friends with Mizuko. Dislikes Evin.

Appearance: Pale skin. Fluffy blonde hair. Orange eyes. Gender: Male. Singing capability: higher than average, sweet and resonant voice. Special skill: Dancing. Personality: Mischievous, but always obedient to the aliens. Acts friendly but a little arrogant. Relationships: Likes Hanna, but not too much. Indifferent to everyone else mostly.

Appearance: Long white hair. Pale skin. Big blue eyes. Gender: Female. Singing capability: Higher than average, soft and sweet voice. Special skill: Being charming. Personality: Kind, sweet, and gentle. When mad, will cry. Relationships: In love with Juna but does not confess her feelings. Friends with Evin. Indifferent to Mizuko and Kaito.

Appearance: Short brown hair. Tanned skin. Brown eyes. Gender: Male. Singing capability: A little lower than average. Uses aggression to hide it. Special skill: Beatboxing. Personality: Very hyper. Easily startled and rebellious towards the aliens. Relationships: Thinks Juna is nice. Has a crush on Hanna. Hates Kaito. Indifferent to everyone else.

Appearance: Pink medium length hair. Pink eyes. Pale skin. Gender: Male, but often mistaken for a woman. Singing capability: Average. Soft and just normal. Special skill: Playing the violin. Personality: Soft spoken, easily startled, and very obedient. Never talks back. A little bit obsessive. Relationships: None except for being friends with Juna. He is a loner.