Name: Cho Kyuhyun

Age: 19 y/o 

Name: Park Jung-su

nickname: Leeteuk 

Age: 23 y/o

Relation: Kyuhyun's only borther.

Name: Kim Heechul

Age: 24 y/o

Relation: Leeteuk's Friend.

Name: Lee Sungmin

Age: 18 y/o

Realtion: His father is Kyuhyun's father's best friend.

Name: Lee Hyukjae

Nickname: Eunhyuk

Age: 18 y/o

Relation: Sungmin's best friend. 

Shin's Family 

A 5-member Korean Rock Boyband

The Members:

Name: Shindong Hee

Age: 25 y/o .. Leader 

Name: Kim Youngwoon

Nickname: Kangin

Age: 24 y/o

Name: Kim Jongwoon

Nickname: Yesung

Age: 22 y/o

Relation: In a relationship with his bandmate Ryeowook

Name: Kim Ryeowook

Age: 21 y/o

Relation: In a relationship with Yesung

Name: Lee Donghae

Age: 20 y/o .. the band's Maknae