Hisasi’s art style—voluptuous, shiny, and hyper-detailed—is the visual bible of the series. Consequently, the HxH lifestyle is dominated by .
Based on the light novel series by Masamune Kuji, Masou Gakuen HxH is set in a future where humanity is under threat from invaders from another world. The only defense is the , specialized armor powered by its pilots.
Cafes in Akihabara have occasionally run Masou Gakuen collabs, offering "Heart Hybrid Parfaits" meant to be shared by two people (one spoon).