Akihito's younger sister; a half-human, half-youmu who works part-time and often serves as the rational voice within the group.
Deep platonic bond formed through shared experiences and mutual understanding of isolation.
Sisters navigating complex family dynamics while supporting each other through supernatural threats.
Brother and sister bound by blood and shared trauma, with Hiroomi fiercely protective of Mitsuki.
Explore the full interactive character relationship map of Beyond the Boundary: I'll Be Here – Past