Mikeru

Driven by a deep-seated disdain for humanity’s destruction of the Earth, this ancient angel seeks vengeance against the Mermaid Princesses for their ties to the human realm. Believing only angels and mermaids possess the divine power necessary to protect the planet, he views humans as inferior. Though his immense strength allows him to withstand the princesses' magical songs, his frail physical form forces him to survive by ruthlessly stealing Seira’s heart and Kaito’s precious memories.