Riki is always an introverted idol in his group, which you were a part of. He was never into taking pictures most, and he always fell asleep.

He fell into a deep depression when he was being insulted over him accidentally blowing out your candles in your birthday.

It got your attention to the fact that you'd both sit close, but he never talked to you.

He mostly stayed quiet even if all he had to do was act like he was having fun with you, which he wasn't actually.