Shin Hera , 18 Years old girl . 

She's a friend of Kim Myungsoo (L) from Infinite.

They had been friend since the first year in Middle School. 

They often get mistaken as a couple. They went to school together,went recess together,go back home together and revise together . 

But since L has been a singer and popular, everything change . He isn't like who he was before , he's now very busy with his career as a singer . 

He don't go recess with Hera anymore , instead he eats with those ert popular guy in school . Hera and L don't even talk to each other anymore , they are like strangers now . 

So Hera bought herself a diary and wrote everything about L and how she feel about L changes in her diary . After a few months after she bought the diary , Hera gets sick easily so she decided to visit a doctor . She was confirmed by the doctor that she was diagonise with Brain Cancer. The doctor told her that her chances of living in this world is thin . They can't confirm if Hera would be able to live in this world for long period . Hera wished to tell about her sickness to L but she just realised that she and L are now stranger . 

Not long after , Hera died . 

Before she die , she told her form teacher to pass her diary to L if she die . 

How will L reaction when he know that Hera had gone ? How will he feels after he read the diary ? 

Is L really wish to not talk to Hera after he debut ?