So, Ideum’s crush back in school was Jaeyi’s older brother, Jiseong. The one who later became a swimmer. Jiseong was also a sickly child. And now Ideum is going swimming…
Jaeyi doesn’t seem to have a very good relationship with his brother—or rather, their relationship is complicated. And it’s pretty obvious that Jaeyi has been developing increasingly serious feelings for Ideum for quite some time now. It’s visible for chapter by chapter how Jaeyi falling in love.
Could this be where Ideum and Jiseong (Ideum’s first love interest) finally run into each other? Especially since they’re going to a place that Jaeyi knows because of his brother, so…

Here comes the brother/jealousy/angst arc… Get ready yall!