Jin Kamurai is a third year student at Darkwick Academy and the captain of Frostheim House. He is also the heir to the influential Kamurai family — though, surly and arrogant, he is highly capable. Once the charismatic ruler of Frostheim, lately he spends his days locked away in his icy chambers, and few can even claim to have seen his face.

Tohma Ishibashi is a third year student at Darkwick Academy and the vice-captain of Frostheim House. He is not afraid to get his hands dirty in pursuit of his goals and has been running things in Jin's absence. His monocle masks the insidious glint in his eye.

Kaito Fuji is a second year student at Darkwick Academy and is a member of the Frostheim House. A trend-chasing social media enthusiast, Kaito works hard to fit in with the Frostheim elites despite his modest upbringing, but his efforts are overshadowed by his tendency to be a gutless coward, who is currently looking for a girlfriend.

Lucas Errant is a second year student at Darkwick Academy and a member of the Frostheim House. He is formerly the only ghoul from Emrys Academy — Darkwick's sister school in the UK. Lucas is friendly, honest, and chivalrous, but any mentions of demons lights a cold fire in his heart. He is searching for the demon who took his twin brother.