echocave asked:

Mood lifter, Au where Haru goes to the aquarium for a class field trip and they get to see one of the mermaid performers. In this case the very handsome Rin who little Haru completley believes is a mermaid.

sakura-rose12 answered:

I imagine it’s a young teen Rin who volunteers or works part time at the Aquarium.

also, I don’t know how mermaid performers work since I’ve never seen them at a aquarium. I imagine it like Ariel at Disneyland haha