During WJSN Save Me Save You promotion

Yeonjung : emm unnie can I know why is your hand is on my ?

Seola : oh sorry, I thought it was a pillow

Yeonjung : I don't think pillow and my is in the same shape, don't they?

Seola : oh sorry, I thought it was my

Yeonjung : well I think my and your is different, beside, you put your hand while looking at my

Seola : *blinks her eyes innocently*