Main characters:

Heo Kyuri (FC)

Boyish and hate girly stuffs.Clumsy,moody,loud and childish.Heo Young Saeng's little sister.Always with Kim Kyu Jong,he's one of her bestfriends.Her bestfriend is Min Sang Yeon.

Min Sang Yeon

Beautiful,smart and kind.Has a crush on a member of SS501; Kyuri's bestfriend since highschool.

Kim Kyu Jong

SS501's center.Kind-hearted,innocent,shy and romantic.Young Saeng's best friend.Always with Kyuri .

Heo Young Saeng

SS501's main vocal; Kyuri's big brother and Kyu Jong's best friend

Minor appearances:

Kim Hyung Jun

SS501's Maknae,being the youngest he is the most immature of the the group and can be insensible sometimes. He didn't noticed Kyuri's feelings for her. He treats Kyuri like a little sister.

Jeon Kyung Mi

Beautiful,rich and model. Kind in front of other people and Hyung Jun but reveals her true personality to KyuRi: MEAN really MEAN ,vain and a spoiled brat (being daughter of an owner of a big company). She really hates Kyuri because of her closeness with the members and her boyfriend.

Kim Hyun Joong

Park Jung Min