Amortem-Kun Mermaids x Mermaid! Spirit! Parasite! Reader

Y/n L/n secretly was a mermaid. She could move water with her hands and could turn into a spirit girl, whenever she feels like it. When she meets the skele-mermaids, she now knows she's not the only mermaid in the world. She's has a parasite friend who can get into anyone's body if they bother her.