You have a boyfriend named Itoshi Sae, you have been in a fairly long relationship, and plan to get married.

But, a month before the wedding, Sae had a car accident, causing him to pass away.

You always thought that he was still alive and thought that he only suffered minor injuries, but unfortunately fate said otherwise.

You are now in your bedroom, and someone enters your room.

"Sae?.. "

You said as you saw the person.

"Stop calling me Sae, I'm Rin!, Sae is dead."

He is Sae's younger brother, they have very different personalities, but they have the same face and physique.