Xiao is a famous assassin in the underground world, he is always sought after because of his strength, on the assassin rankings he is at the top, which further honors his name

This time while on a nominal punishment, in the house of the homeowner he killed, he found a secret tunnel leading to a gallery with horrifying exhibits, almost all of which were a gathering of the most disgusting things in the world but when he reached the end was a sealed room, inside was a very large tank, he found a mermaid looking at him with sparkling eyes through the glass

He broke the glass then took you to his own house where no one would find you