"As you can see, absorbing human body fluids can make merpeople grow into legs, especially blood. I'm guessing this murderer sucked a lot of human blood to maintain his legs."
I agreed with Dacia, but I didn't understand why he had to kill to suck human blood.
"Can't he just suck blood and not kill?" I asked.
"I guess he was like that at first, until he came to this place and smelled me," Dacia deduced.
My eyes lit up. "I remember! When he saw me, he said that I had a familiar scent!"
"This is why all the people he killed were related to you," Dacia said.
"Because your smell passed through me to the victims!" I suddenly realized.
"Yes, although I don't know why my scent stimulates him to kill, the most important thing now is for the police to find him and put an end to this murder case."
"You still didn't tell me why he could transform his legs after absorbing my blood," I said in confusion.
