Falling Into the Deep Sea

On a starlit night, Xingyu—a young girl battling cancer—meets Xinghai: a mermaid girl with stars shining in her eyes. "Xingxing... I miss you." She was just a silly little fish. That is, until one day, when a doctor walked in on Xingyu talking to thin air. "They say you aren't real. But I don't believe them. My silly little fish feels so incredibly real to me." ... "The diagnosis is back: it's schizophrenia." ... Swept up in the torrent of her own memories, she glimpses another story—a different narrative about the two of them. "The night is so cold... all I wanted was a single ray of sunlight." "You want a ray of sunlight? How about the first light of dawn? Would you like that?"