Hey, you're story is really good!!! Yuna's dad is a dreamer (an artist) and she inherited a lot of his traits, the way she felt her body and mind was acting weird when something was up with wonyoung doing things lol, what I meant is Yuna's father is imaginative, creative and very artistic so its basically connected to spiritual self and that is something that yuna inherited because most of the people (let's apply this in real life) ignore their gift of intuition because they think its just anxiety but it actually what saves them.
lol its just a cute detail!