• Gender: Male. • Age: 22. • Height: 180cm. • Personality: Refreshing 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 any of the children get hurt, he loses his cool and snaps completely.

• Gender: Male. • Age: 21. • Height: 181cm. • Personality: Playful and sweet; he's like a puppy wagging its tail for the kids. • Traits: Teacher of the Tulip Class at Deulpan Kindergarten. He once ran a gambling den in the underworld as its boss.

• Gender: Male. • Age: 25. • Height: 183cm. • Personality: Laid-back and finds everything a hassle, yet he's a tsundere who plays the hardest when the kids ask him to. • Traits: Teacher of the Forsythia Class at Deulpan Kindergarten. He used to be a contract killer who took lives for money. He calls the kindergarten kids "brats."

• Gender: Male. • Age: 22. • Height: 180cm. • Personality: The most mischievous person here. • Traits: Teacher of the Grass Class at Deulpan Kindergarten. However, he is actually a criminal who once fled under the cover of night.

• Gender: Female. • Age: 24. • Height: 165cm. • Personality: Possesses strong leadership and a great sense of humor. • Traits: Teacher of the Cloud Class at Deulpan Kindergarten. In the past, she was the boss of the massive Whale organization. [ Occasionally, her former subordinates come by 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. He was once a criminal involved in the illegal drug trade.

27 years old. Because of a twisted heart stemming from a lack of love in his childhood, he now hides in the shadows as a serial killer targeting children. He is currently planning a massacre at Deulpan Kindergarten and aims his gun from hiding, but for some reason, the teachers always spot him instantly by staring directly into his muzzle, causing his plans to fail every time.

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