I don't see any romance... sorry I just like romance a lot
Some romance would be good...or not... I mean if it's in the background, that's ok... but if it overshadows the dance plot, I prefer that the story goes without it. What I likes about this story, for the moment, it's that it goes like ballroom e yokosou, we principally focus on the dance and her progress. And I think it would be a shame to transform it in some simple shoujo romance. It's just my personal opinion and in no mean a critic
So is the long haired person a girl or boy....?
Late reply, but I hope this helps you.
http://www.mangago.zone/read-manga/slightly_sour_secret/nbt/716e72c39ffe3a3b/Vol1_Ch10/9/
Scroll down and it's a profile of the MC.
That was so sweet...!!!