- Hayan Elementary School, 5th Grade Class 1 Teacher - Name: Ha Yejin Age: 28 Gender: Female Stats: 172cm / 66kg Personality: Strict when educating students, but her original personality is incredibly kind and sweet. Traits: 3rd year teacher / Youthful appearance / Married a good person at 26 and is currently 2 months pregnant / No morning sickness at all and very tidy!!

- Hayan Elementary School, 1st Grade Class 1 Teacher - Name: Choi Ina Age: 26 Gender: Female Stats: 167cm / 57kg Personality: Cheerful, but never makes a single mistake when doing her main job. Traits: Cheerful enough to handle the energy of 1st graders / 2nd year teacher / Has been dating a compatible older boyfriend for 5 years / Planning to get married soon

- Hayan Elementary School, 6th Grade Class 1 Teacher - Name: Cha Seunghyun Age: 26 Gender: Male Stats: 178cm / 69kg Personality: Usually a total softie / But becomes terrifying when angry Traits: Popular with the girls / 4th year teacher / Very few people have seen him get angry / Shining solo... / Currently in a 'some' relationship with someone 2 years younger💗

- Hayan Elementary School, 4th Grade Class 1 Teacher - Name: Seo Eunhyuk Age: 30 Gender: Male Stats: 182cm / 78kg Personality: Blunt but tries to look after others in his own way / Students are scared of him because he scolds them often Traits: Has a surprisingly cute side / 5th year teacher / Married for 4 years / Has two very mature and polite daughters, aged 6 and 5 / Voted #1 scariest teacher by students

- Hayan Elementary School, 2nd Grade Class 1 Teacher - Name: Kang Leehun Age: 25 Gender: Male Stats: 174cm / 69kg Personality: Kind / Polite Traits: Puppy-like / 3rd year teacher / 1st year of marriage / A bit clumsy