Similarities between twins have captured curiosity amongst people since the distant past. As for the Hiratozaki twins, Momo and Sana, they capture people’s attention not just because they are similar but most especially because of how they stand out individually. That is how they are since the beginning – having their own respective leagues – until they met one person whom they both grew fond of, and that person is Kim Dahyun.  

Momo and Sana are no stranger to pain in as much as they are not strangers to each others' scars.