Hollow Regalia

Hollow Regalia (虚ろなるレガリア) is a Japanese light novel series written by Gakuto Mikumo and illustrated by Miyū. It began publication under ASCII Media Works' Dengeki Bunko imprint in June 2021; as of February 2024, six volumes have been released. A manga adaptation, illustrated by Matsuki Ugatsu, began serialization in Dengeki Maoh in September 2022; as of May 2024, three volumes have been released.

Light novel
Written by Gakuto Mikumo and illustrated by Miyū, the light novel began publication under ASCII Media Works' Dengeki Bunko imprint on June 10, 2021. As of February 2024, six volumes have been released.

In September 2022, Yen Press announced that they licensed the light novel for English publication.

Manga
A manga adaptation, illustrated by Matsuki Ugatsu, began serialization in ASCII Media Works' magazine Dengeki Maoh on September 27, 2022. As of May 2024, the series' individual chapters have been collected into three tankōbon volumes.

Reception
Kim Morrissy and Rebecca Silverman of Anime News Network had differing opinions; Morrissy liked the initial plot twist but felt that it relied too heavily on tropes. Silverman liked the setting and use of folklore, though she also felt it relied too much on tropes. Demelza of Anime UK News described it as "[not] the polished fantasy series I was hoping for but there's plenty to enjoy here" and recommended it to fans of Strike the Blood.