A high school student and an immortal half-youmu, offspring of a human and a supernatural youmu. He instinctively saves Mirai from suicide and becomes the target of her sword practice, seeking to help her regain confidence in killing youmu.
A metaphysical connection where Mirai's existence is literally sustained by Akihito's blood, blurring the lines between dream and reality.
A professional dynamic where Izumi transitions from a strict Spirit World Warrior officer to a protective guide who shares critical mission truths.
A steady friendship rooted in shared school life, literary interests, and mutual support during supernatural crises.
A functional relationship where Miroku serves as an information conduit, supplying crucial lore that shapes Akihito's understanding of his condition.
Explore the full interactive character relationship map of Beyond the Boundary