Сын Нанао

Appears in Mermaid's Mask. He is a 10-year-old child who believes that the person raising him is his stepmother, when she is actually his paternal grandmother (who'd eaten mermaid's flesh 25 years prior). At the age of 2, he was kidnapped and made to believe that his father's past was actually his own, and has had to take a small daily dose of a mysterious healing medicine ever since.