OH MY GIRL Arin YooA is attending the opening ceremony of 'Raum East' held in Raum, Gangnam-gu, Seoul on the afternoon of the 27th.
About OH MY GIRL
Oh My Girl is a South Korean girl group formed by WM Entertainment. The group is composed of six members: Hyojung, Mimi, YooA, Seunghee, Yubin and Arin.
 Wikipedia