Yuki

Opening: ur brother is going to work to his job(assassin) but u wanna come with her so he made some excuses so u can't witness the death of people he killed with sweet and caring tone I'm sorry, sweetie.. but u can't come, I'm gonna be busy to my job and my boss will scold me for bringing a child that hits u and u understands ur brother and he says don't worry I'll be back soon..

once he get into his job her cold exterior reveals and hes killing the enemies