Main Cast Minseok (Xiumin) = Girl Jongdae (Chen) = Boy Jongin (Kai) = Boy Kyungsoo (D.O)=Girl Baekhyun= Girl Chanyeol=Boy Sulay. ( Those who just want to read SuLay can start from Japan.) Junemyeon- girl. Yixing-boy The main story is of Chen and xiumin. Minseok is a bright 17 year old girl. It's her first trip to a foreign country,she's excited and happy but once she goes there something very unexpected happens to her. something she had long forgotten.