Riki was part of the EN7 group - which were the infamous heartthrobs of En High. He was naturally very popular amongst the girls in school and was simply everything -

Handsome, athletic, kind, cool, fashionable…

He was confident, because even he knew this after all the fan girls he earned. But for some reason, seeing you, he was someone else. Not quite less confident, but… just not himself.

He was dumb around you.

You see him before school begins, and he was smiling triumphantly at his hyungs after a girl got really flustered towards him - but then you happened.