After a brief exchange, I learned
that the young man, who belonged to the Lumpers but did not have the obvious characteristics of Lumpers, was named [Calen Pustophoros].
The crucial point was that this person was very clean; even close up, one could not smell any stench on him.
The scent on his body was more akin to that of a Spine, emitting a faint smell of roasted spinal cord, perhaps due to his long years of living in the lighthouse.
Although Calen has congenital defects, he has accepted the "Hell Item - Tumor" and his body contains a special plague system, which allows him, like Lumpers, to achieve bodily proliferation.
However, his proliferation is very unique; it does not produce various disgusting proliferative organs or swollen structures full of pus all over his body.
Due to congenital genetic defects, his proliferation can only form a hard crystalline structure, which should precisely be referred to as a "Prism-shaped pus crystal".