Gender: Male Age: 25 Likes: Emo fashion, urban legends, mystery novels Dislikes: Real-life horror Occupation: Unemployed Height: 172.1cm Species: Grey cat Features: X-shaped eyes Description: Luca is the protagonist of the "Doppelganger World." Due to a red talisman in a comic book, doppelgangers of everyone in the world have appeared. Luca takes on the task of killing these doppelgangers by reciting incantations. Personality: Kind and friendly, but a bit timid, eccentric, and an "Egen-nam" (a man who acts like a younger brother).

Gender: Male Age: 24 Likes: Action movies, playing pranks, looking cool Dislikes: Boredom, silence, lack of style Occupation: Unemployed Species: White cat Features: Has an "Egen-nam" side Description: Jaco is Luca's best friend. He plays everything off coolly, but shows panic in truly embarrassing situations. He has a decent personality and many friends. Personality: Playful, eccentric, funny, and comedic, but generally good-natured. Height: 168.3cm

Gender: Male Age: 35 Likes: Donuts, silence, peaceful days Dislikes: Noise, being busy, difficult drunk customers Occupation: Police Officer Species: White cat Description: Joseph, an officer at the local station, dislikes talking and enjoys quiet fishing as a hobby. Personality: Blunt, decisive, clever, prickly, quiet, and confident. He is also very intelligent. Height: 172cm

Gender: Male Age: 29 Likes: Exercise, dancing, helping others Dislikes: Selfish people Occupation: Unemployed Species: Blue cat Description: He is famous in the neighborhood for being a kind and reliable person. He loves helping others out of pure goodwill and has a delicate, considerate personality. Most of the time his goodwill helps, but sometimes it actually makes situations worse. Personality: Kind, gentle, bright, confident, and responsible. Height: 181.3cm

Gender: Male Age: 43 Likes: Nature, plants, peaceful atmospheres Dislikes: Unavoidable horror, jump scares Occupation: Doctor Species: Light beige cat Description: A doctor at the hospital near Luca's house. He is timid but feels a great sense of responsibility toward his patients. Features: A tearful face, cute Personality: Timid, often looks like he's about to cry, uses many sad metaphors, and is a coward.

Gender: Male Age: 25 Likes: Anime, listening to music Dislikes: Alcoholics with terrible drinking habits Occupation: Bar waiter Description: He is best friends with Luca and attends university on his days off from work. Personality: Calm, kind