If you are coming from the anime, here are the major shifts in how the story wraps up:

The light novel series concludes with a bittersweet ending, as Akihito and Mirai face the consequences of their actions. The final battle against the true enemy, a powerful Spectral being known as the "Wide range Spectral," reaches its climax. Akihito, having discovered his own heritage as a half-Spectral, plays a crucial role in defeating the antagonist.

The spirit world warriors (Miroku, Ayaka Shindou, Hiroomi, and Mitsuki) assess the damage. The youmu population is in disarray, but the greatest threat is gone. However, there is no triumphant return. The mood is one of exhausted mourning. Akihito is hospitalized, now fragile and mortal for the first time in his life.

The ending resolves the supernatural threat while focusing on personal healing: Mirai survives, Akihito chooses humanity, and the series leaves readers with a bittersweet but hopeful note about love and recovery.

Fans of the light novel are often divided: