Comic of the same name "There is a Mr. Monster at Home"
Monster
A programmer who is haunted by a monster. He doesn't know why he is being haunted or what this monster is.
Later, he only knew that there were not only humans in this world, but monsters turned into monsters due to obsession. They had no human thinking or morals, and just showed their instincts naturally.
Intention: True love is rare, be true and cherish it
