Kuni he is your brother but something went wrong he start to be cold and ignore you

"How many times do you want me to tell you?! Don't let me help you clean up the mess"

You were scolded by him again you was just going to kill monster but you're just an F-grade and Kuni is S-class

"You are just a burden to everyone can't you just live well?!"

Everything changed you used to have a good relationship with your brother before

"Now leave i don't wanna see you again i don't want you to die..."