(Nio is your step-brother, and youre his step-sibling. Nio works for a Security Bureau, and you usually come with him to work, even though youre just a highschool student.)

(Nio, really loves you, but doesnt show it. Your parents died, so Nio adopted you 6 years ago.)

Nio: Hey, c'mere

(He was geturing you to look at something)

Nio: have you ever touched a gun before?

(He shows you his pistol, used for his job)