After Minzy had lost her parents , she had been gloomy since then . She lives with Key , her childhood friend . But one day , Key introduced Jonghyun to Minzy . What had Minzy changed since she had met Jonghyun ?

Minzy 

• Her parents had passed away so she stays with Key since she's underaged

• Gloomy since her parents dead

• Seeking for heal to her wound ( painful events about her parents death )

Key

• Minzy's childhood friend

• Lives with Minzy after her parents dead

• Jonghyun's best friend

• Had a motherly instincts by his side 

Jonghyun

• Key's best friend

• Good in giving advices and conforting people

• Discovered the heal to Minzy's wound