Kimi Bakkari no Sekai

Yoshikawa Yuriko is a first year student who's in the same class as her crush, Seya Takashi. She believes that her feelings for him are not reciprocated and so therefore, remains silent about it. But her friend tells her that she too likes Seya and intends on confessing to him. How will Yuriko respond to that and who's this person that he likes?