Love stories of four couples in one-shot

Dongguk University:

1. Chou Tzuyu - introvert vet student who only loves his family, friends and pets.

2. Kim Dahyun - jolly paled skinned vet student who's friends with Tzuyu

3. Son Chaeyoung - friends with Dahyun and Tzuyu who decided to take 'Animal Society' class

4. Hirai Momo - engineering student who loves food

5. Myoui Min - another introvert

6. Minatozaki Sana - big mouthed girl who ended up attending 'Animal Society' class

7. Im Nayeon - engineering student, delayed by two years and enrolled to 'Animal Society' class

8. Yoo Jeongyeon - a registered vet and hottest professor of Animal Society

9. Park Jihyo - owns a Jokbal House