If anyone in this world could have pulled Jess, who had already fallen into obsession, back from the brink, it would have only been his wife, Tiny.
After his parents' deaths, Jess once fell into a paranoid state, fixated on investigating the true cause of their demise.
It was during that state that Jess met the professor who later became a victim, which led to the start of his research on Gene Potion.
During that time, the Mysterious Person found Jess for the first time and offered to fund his research.
And it was Tiny, Jess's wife, who ultimately made him stop.
After seeing his wife's haggard face, Jess chose to let go, to return to his family, not allowing those alive to continue being hurt.
Thereafter, he sold all his materials at a low price to the Mysterious Person and withdrew from the center of the vortex.
Although he still did not give up the investigation into the cause of his parents' deaths, he was no longer obsessed with those indescribable, unknown mysteries.