Swish!
With a swishing sound, Yu Bai disappeared from his spot as he went in search of it.
The moment Yu Bai left, Lu Zhen examined the mark that was printed on the back of his hand.
The mark resembled that of a butterfly and was pitch black in color, although not as dark as the girl's eyes, which seemed to be impenetrable to light. Somehow, she had marked Lu Zhen with this butterfly mark.
The colour of the mark was an intense black, and it bore a simple butterfly design, resembling a tattoo, albeit entirely black.
As Lu Zhen observed the tattoo, he inexplicably felt slight movements, as if the butterfly were alive, though it appeared to be devoid of vitality.
A thin, thread-like aura was connected to the tattoo. However, this connection was obstructed by Lu Zhen's own aura, creating a domain-like barrier. Lu Zhen continued to supply his aura to the tattoo, which seemed to consume it like a voracious black hole.