Son Eunseo is a girl who really loves to take care of other people instead of herself. She always takes care of people around her, but there is one person who she really takes extra care of and has a really soft spot for. That person is her best friend, Kim Bona. They have been friends for 5 years. Eunseo thinks that Bona is a girl who needs extra care because she is sometimes clumsy.

One day when Eunseo and Bona were walking down the stairs in their school, they were walking while talking with each other and joking with each other, then suddenly Bona stepped wrongly and almost slipped from the stairs, but luckily Eunseo was holding her hand tightly to prevent Bona from falling.

"Woah! That was close. Thank you so much, Eunseo. I might have fallen if you were not here," Bona said.

"Be more careful next time, Bbo" 

On the other day, when Eunseo and Bona were walking to go buy food outside of their school, Bona was walking really near the road where the cars were passing by, and Eunseo noticed a car that was speeding so fast and pulled Bona toward her direction so that Bona wouldn't be hit by the car.

"Careful there," Eunseo said.

Beside always protecting Bona, Eunseo also tries to always be there for Bona, even when she doesn't say she needs her. Like that one day when Bona was having a really bad day and was in a bad mood for almost the whole day, Eunseo was there beside Bona all day, just being