Im Yoona

-Lost her memory

-Didn't know Donghae, Her old friend

-Had a brother, Named Sungmin

Lee Donghae

-Loves Yoona

-Relationship with Jessica

-Cried when saw Yoona didn't know him again

Jessica Jung

-Arrogant,

-Relationship with Hae

-Bestfriend with Siwon, Dislike Yoona

Choi Siwon

-Liked Yoona

-Dislike Donghae

-mean with Jessica

Im Sungmin

-Sick Anemia

-easy cried

-Cute, Loveable

-Doctor said, He will going to die