Adaptations of a manga / comic with a complex and interesting lore with supernatural elements.
Both dramas shows young and charismatic characters growing, getting stronger and making friends along the way while fighting evil / saving the world. Classic shônen vibe.
They have great actions scenes with satisfying visual effects.

In both shows, the female lead lives alone, with an absent father, running away from his debts.
She gets to cohabitate with the non-human male lead. And while discovering his magical world, they met other supernatural people and help them.