When Bae Joohyun is very jealous that her best friend and crush Kang Seulgi is spending too much time with the new girl, Kim Jisoo. She doesn't really like that one bit, since it's always been the two of them for as long as she can remember. Joohyun decides she must go and make sure that eveyone knows that the bear belongs to her. Seulrene cute childhood fic.