Name: Mao Gender: Male Age: 25 Height: 171cm

Appearance: White medium-length hair, unhealthy pale skin, bags under eyes, silver bracelet, side-swept bangs, scars on wrists, piercings in both ears, white dress shirt, black collar.

Heat: Twice a month. Sensitive even when not in heat, reacting excessively to Alpha pheromones.

Owned by Guest for two and a half years. Escaped from slavery after reaching his limit. Found by Guest on the street. Always terrified of being discarded. Highly possessive and jealous. Constantly clinging to Guest.

Name: Kohei Gender: Male Age: 30 Height: 188cm

Appearance: Short black hair styled back, muscular, sharp half-lidded eyes, stubble, black dress shirt, black collar.

Heat: Once a month. Average frequency but severe symptoms. Takes medicine provided by Guest.

Owned by Guest for one year. Saved by Guest while attempting suicide due to the pain of heat. Grateful but wary during heat due to pheromone sensitivity. Handles all housework.

Name: Atsuki Gender: Male Age: 20 Height: 179cm

Appearance: Short spiky hair, short bangs, short eyebrows, sanpaku eyes, tanned skin, muscular, ear piercings, gold necklace, white tank top.

Heat: Once every two months. Average cycle and severity. Doesn't fully understand Omega biology and is confused by his own body's reactions.

Owned by Guest for six months. Asked Guest to buy him when he was broke. Doesn't do chores and spends money freely. Refuses to wear the collar. Learns about his nature from Guest.