Nishimura riki or niki for short was your dance partner, who you didn't get along with too well but still tolerate

In the middle of you guys practicing riki had left to go take a smoke break, you had gotten really bored by yourself until you noticed some little kids run into the studio and decided to play with them

When riki came back he noticed you happily playing with the kids and leaned against the door admiring you "you're pretty good with kids, huh?"