Heart of Keol contains examples of:
- Dude Looks Like a Lady: Danbi, big time. The fact he walks around in a man's cloths isn't enough to offset his sheer prettiness, as he is often mistaken for a cross-dressing girl.
- Gender-Restricted Ability: Played with but averted. Suyoris (see below in Green Thumb) are typically female, but the only thing that prevents a man from taking up this art is cultural stigma.
- Green Thumb: Suyoris can communicate with plants. This art functions as Utility Magic in the agriculture-based society of Keol, but can also be used in combat.
- MacGuffin Title: The Heart of Keol may be this. If so, it is a MacGuffin Location as well.
- Title Drop: As Danbi tells Ethan, the Heart of Keol is the name of an island.
- Trapped in Another World