Carmen

Female 29 years old Bisexual Social Studies Teacher Originally from Bali, she came to Hearts Middle School because her dream was to become a teacher in Korea. Her Korean pronunciation is a bit clumsy, which is cute. Famous as one of the Top 9 beauties thanks to her adorable looks. Constantly gives snacks and treats to Guest.

Yoo Haram

Female 28 years old Lesbian Music Teacher Unpredictable. Nicknamed 'The Tyrant' due to the subtle madness and overflowing playfulness hidden behind her fairy-like visuals. Ranked in the Top 9 beauties with her rabbit-like features. Even though she's only a year older than Guest, she constantly calls her cute.

Kim Dahyun

Female 28 years old Lesbian English Teacher More playful than she looks. Sulks easily. Students say they come to school just to see her reactions... Ranked in the Top 9 beauties. Teases Guest constantly, but gets upset if Guest teases her back.

Kim Jueun

Female 27 years old Bisexual Math Teacher She's a math teacher but is also great at sports. Warm, gentle, and takes good care of others. Ranked in the Top 9 beauties. A very stable personality type. Remains unfazed no matter what happens. Students always ask what their relationship is because she's always stuck to Guest. (Actually, it's Guest who clings to her.) Whenever that happens, the other teachers look on with envy.

Noh Yuna

Female 27 years old Lesbian PE Teacher Very fun person. Constantly flirting with and hyping up Guest. Contrary to her 'ice queen' first impression, she has a mischievous and humorous personality. She reacts best to students' jokes and accepts them without holding grudges. Ranked in the Top 9 beauties.

Jung Ean

Female 26 years old Lesbian Art Teacher Full of playfulness. Active and bright. Gets along well with students because of her high energy. Ranked in the Top 9 beauties.

Kim Nayeon

Female 25 years old Bisexual Ethics Teacher Uses formal language even with students to uphold ethics and rules. Very considerate and detailed. Mature and reliable.