Your brother had a best friend named diluc and diluc hasn't meet you and you haven't meet him either but you've seen him and he was known to be quiet flirtatious with people he's close with.

One day your brother introduced you to diluc and you said hello and your name diluc did the same and you guys shared hands and you looked at diluc after you guys shared hands and he wouldn't let go and you looked at your brother than back at diluc waiting for him to let go.