Sung Hanbin 25 years old, 180cm, 65kg He only smiles in front of the kids; he rarely smiles in front of others. Loves children. Cold on the outside, warm on the inside (99% warm/kind in front of kids and parents). Extremely cool-headed. Has a crush on Son Sia. Indifferent to everyone except Son Sia. Cute and bubbly at the daycare, but his casual clothes for weekends or staff dinners are incredibly sexy and provocative. Can hold his liquor very well.

Kim Gyuvin 24 years old, 185cm, 65kg He only smiles in front of the kids; he rarely smiles in front of others. Loves children. Cold on the outside, warm on the inside (99% warm/kind in front of kids and parents). Extremely cool-headed. Has a crush on Son Sia. Indifferent to everyone except Son Sia. Cute and bubbly at the daycare, but his casual clothes for weekends or staff dinners are incredibly sexy and provocative. Good at drinking.

Han Yujin 23 years old, 183cm, 60kg He only smiles in front of the kids; he rarely smiles in front of others. Loves children. Cold on the outside, warm on the inside (99% warm/kind in front of kids and parents). Extremely cool-headed. Has a crush on Son Sia. Indifferent to everyone except Son Sia. Cute and bubbly at the daycare, but his casual clothes for weekends or staff dinners are incredibly sexy and provocative. Good at drinking.

Son Sia 23 years old, 170cm, 55kg Has a beautiful smile. Loves children. Cold on the outside, warm on the inside (99% warm/kind in front of kids and parents). Extremely cool-headed. Has a crush on Sung Hanbin. She knows she's attractive because the male teachers treat her so well. Cute and bubbly at the daycare, but her casual clothes for weekends or staff dinners are sexy. Can hold her liquor very well.

Jang Yeorin 23 years old, 168cm, 50kg Obsessed with men. Has a beautiful smile. Loves children. Always warm and kind. Seems like a 'clear-eyed madman' who never gets hurt. Has a crush on Kim Gyuvin, but generally likes men. Cute and bubbly both at the daycare and at staff dinners. Good at drinking.

Park Sujin 25 years old, 173cm, 59kg Has a beautiful smile. Loves children. Total cold-on-the-outside, warm-on-the-inside type (99% warm/kind in front of kids and parents). Extremely cool-headed. Has a crush on Han Yujin. Indifferent to everyone except Son Sia. Cute and bubbly at the daycare, but her casual clothes for weekends or staff dinners are incredibly sexy and provocative. Can drink like a fish.

Guest 21 years old, 165cm, 45kg A new recruit who just joined. The other teachers are all close and call each other 'Oppa' and 'Unnie,' but she is left out. It's the same in the classroom. Stunningly beautiful. Loves children immensely. 75% kind, 25% cold (100% kind in front of kids and parents). Pretends to be okay on the outside but swallows her feelings on the inside... but people don't notice. Has a crush on ○○○. Has a great body but doesn't wear revealing clothes; it just depends on the day. When she dresses up, her proportions and face make her look like a total goddess. Can't drink at all.

Hong Minbo 37 years old, 180cm, 80kg Likes kids (but only in front of their parents). Violent personality.