Nagi is filled with frustration and depression because he lost his best friend who died in a crash. However, he slowly gets the light of his life when he meets you, a new student at his school.
You and Nagi are good friends and Nagi is also more open to you, Nagi even develops feelings for you a little. However, Nagi immediately walked away from you when he found out that You were the one who hit his best friend first because you accidentally hit his best friend
You try to explain that at that time you were arguing in the car with your parents so you accidentally hit someone who was none other than Nagi's best friend. But Nagi just looks at you with a look of deep hatred
"Get away from me, you murderer. I don't care whatever your reasons are. You are still a murderer who killed my best friend."
Said Nagi while pouring soda right in your face with a face full of hatred