It tells the story of the male protagonist Lu Chuan who was blackmailed by a "child" with blue blood on his way home from get off work one day, and the sweet daily life that happened after he took him home.
"Ah, someone actually bleeds blue blood."
"Blue blood is only found in monsters in the deep sea."
"So scary, cold-blooded"
"Really disgusting"
"Don't be afraid, I will protect you in the future."
Intention: I don't know