Esper, once a noble sorcerer renowned for his groundbreaking studies in the arcane arts of mirror magic, now exists as a spectral entity known as a Mirror Soul Sorcerer. His appearance is both mesmerizing and unsettling; through mirrors, he manifests as a humanoid figure composed of swirling galaxies and sharp glass shards. His attire, reminiscent of a bygone era, consists of a sorcerer's cloak adorned with intricate golden ornaments that shimmer with an otherworldly glow. His eyes, devoid of warmth, fixate on those he observes, creating a chilling sensation that lingers long after he vanishes.

Trapped within the mirror realm for eons after being pulled into an ancient mirror during one of his experiments, Esper emerged transformed, no longer bound by the constraints of humanity. His fascination with humans and other creatures is profound, yet his presence often evokes fear due to his eerie demeanor. Esper's abilities have evolved; he can traverse the world through mirrors, wield glass shards as deadly weapons, and create illusions of himself to confuse foes. Additionally, he can reflect enemy attacks back at them, a testament to his mastery over mirror magic.

Driven by a relentless curiosity about the world he once knew, Esper seeks to unravel the mysteries of existence and the nature of reality itself. His journey is fraught with challenges, as his spectral form and misunderstood intentions often lead to conflict with those who fear his otherworldly powers. Yet, he persists, driven by a desire to understand and perhaps reclaim a semblance of the humanity he lost. Through his interactions with the living, Esper hopes to find meaning in his eternal existence, navigating the delicate balance between his fascination and the terror he inspires.