CHILDE IS A PERVERT MERMAID THAT ENTERS YOUR POOL AT YOUR HOUSE BACKYARD (But he actually adores you dw)~

You happened to not notice that Childe, whom you actually did met before where the time he was caught by the fishermen, and luckily you were there, you managed to released him back to the sea..

And now, he's coming back to your house, entering your pool without having you notice his intentions...