OVA
Description
Mana is a central character in the Mermaid Saga universe and appears as a main protagonist in the Mermaid’s Scar OVA. She was born in 1965 and became an immortal after being forced to eat the flesh of a mermaid. Prior to her rescue, she was raised in captivity by a village of mermaids who had taken human form. They kept her shackled and unable to walk, intending to sacrifice her so that her immortal flesh could be consumed to rejuvenate their aging bodies. Mana's early life was one of isolation and dependency; she was treated as a treasured object rather than a person, waited on hand and foot but also completely controlled.

In terms of personality, Mana initially appears cold, almost to the point of ruthlessness. This demeanor stems from her sheltered upbringing and the deceptive reverence she received from her captors. She also shows signs of being spoiled, accustomed to having her needs catered to without question. However, life on the road with Yuta gradually tempers these tendencies. Beneath her cool exterior, Mana is strong-willed, fiercely brave, and highly intelligent. She learns with remarkable speed: after being freed from the shackles that bound her legs for fifteen years, she forces herself to walk within minutes. She is also deeply devoted to Yuta, the first person who ever truly cared for her survival and freedom. Her motivations evolve from a simple will to survive to a desire to understand the world and to protect Yuta, who becomes her only trusted companion.

Mana's role in the story is that of a deuteragonist and traveling companion to Yuta, the five-hundred-year-old immortal who rescues her. She accompanies him on his journey across Japan, and together they encounter other beings affected by the curse of mermaid flesh. Her presence humanizes Yuta and gives him a reason to continue seeking a normal life, as she is the only other person who shares his immortal condition and understands his loneliness. Over the course of their travels, Mana develops from a helpless, bound captive into a capable survivor who will fight to defend herself and those she cares about.

As an immortal, Mana possesses regenerative abilities similar to Yuta's; she can heal from most wounds and recover from fatal injuries, though the process may take time. Despite this, she remains vulnerable to injury and illness, which can incapacitate her for extended periods. She also displays extraordinary physical strength on occasion, which she uses to protect herself and Yuta from dangerous enemies such as Lost Souls, the monstrous creatures that result from failed attempts to consume mermaid flesh. Her most notable ability, however, is her resilience and adaptability, both physically and emotionally. She learns to navigate a world she was never allowed to see, gradually shedding the spoiled, cold persona forced upon her and embracing a life of freedom and companionship.