A Fool in Love, Love Like a Fool(2019)

Born into a wealthy family, Xiao-wei lives a carefree life with his mother taking care of him. She enjoys reading comic books by her favorite author, Cuff, especially the ones about mermaids. One day, he accidentally gets on the wrong bus, ends up at the beach and meets a beautiful mermaid named Blue. He believes that Blue is the embodiment of the character in those pictures...