(RUIKASA MERMAN X EXPLORER AU)

Kamishiro Rui was a merman from the seas outside the civilizations where humans lived, Tsukasa Tenma who was an explorer, decided to leave a certain civilization and went to explore the seas. When exploring these seas he found a giant mermaid of at least thirty meters, this merman took him in his arms and looked at him fascinated

-woah... what are you...

Asked the merman