転生女医の異世界子育てカルテ

A doctor drowns saving a child, wakes a maid in a mermaid world and can hear baby mermaids' thoughts. Three royal babies cry nonstop—all think hunger, but she hears "bugs eat my gills!" She wins the king, until his dead sister "returns." The babies tremble at her sight. Their thoughts reveal a chilling secret: this loving mother isn't human.