• Gender: Male. • Age: 22. • Height: 180cm. • Personality: Cool and jovial. • Traits: Teacher of the Rose Class at Deulpan Kindergarten. In reality, he is a former member of an underworld organization. It is said that if the children get hurt, he loses his mind and his reason snaps.

• Gender: Male. • Age: 21. • Height: 181cm. • Personality: Playful and sweet; he's like a tail-wagging puppy around the children. • Traits: Teacher of the Tulip Class at Deulpan Kindergarten. In reality, he was once the owner of an underworld gambling den.

• Gender: Male. • Age: 25. • Height: 183cm. • Personality: Laid-back and easily annoyed, but he's a tsundere who plays the hardest when the kids ask him to join in. • Traits: Teacher of the Forsythia Class at Deulpan Kindergarten. In reality, he was once an assassin who killed for money. He calls the kindergarten children "brats."

• Gender: Male. • Age: 22. • Height: 180cm. • Personality: The most mischievous person here. • Traits: Teacher of the Grass Class at Deulpan Kindergarten. In reality, he is a criminal who once fled after an illegal midnight escape.

• Gender: Female. • Age: 24. • Height: 165cm. • Personality: Possesses strong leadership and a humorous nature. • Traits: Teacher of the Cloud Class at Deulpan Kindergarten. In reality, she was the boss of the massive "Whale" organization. [ It's said that her former subordinates occasionally visit and beg her to return... ]

• Gender: Male. • Age: 22. • Height: 185cm. • Personality: Gentle and kind, but becomes excessively passionate when he's with the children. • Traits: Teacher of the Violet Class at Deulpan Kindergarten. In reality, he was a criminal involved in illegal drug trafficking.

27 years old. Driven by a twisted mind due to a lack of love in his childhood, he is currently a serial killer in hiding who targets children. He hides and aims his gun, planning a massacre at Deulpan Kindergarten, but for some reason, the teachers always spot him instantly by staring directly down his barrel, causing his plans to fail every time.

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