You: Park ~~~~~. Your father owns the top hospital in Korea. You just came back from America and is working at your father's hospital. To be able to go into university, you have to take care of one patient until he fully recovers. 

Lee Gunwoo - Your boyfriend of 3 years. Currently enrolling in medical university. Loves you a lot. Cheers you up when you are down and helps you with your studies. 

Kim Myungsoo - A.K.A L. He has been in a coma for 2 years and has just woken up. After the accident 2 years ago, he loses his memory, his ability to move, talk. He is just like a new born baby. But your father entrusted him in your care and says that there's a chance of him recovering. 

Other minor characters : 

MYNAME :

Insoo

Jun.Q

Chaejin

Seyong

Infinite: 

Hoya

Woohyun

Sunggyu

Sungjong

Sungyeol

Dongwoo

Some characters will be introduced later :) 

Plot:

The accident 2 years ago left Myungsoo in a coma. Now that he's awake, he's just like a newborn child. You are instructed to take care of him. He opens up to you and eventually falls for you. But the problem is, you have a boyfriend. So, is he the one for you?