Xun Wanxi, after becoming the second Kira in the DN world and losing to the (true) second Kira who was also a time traveler, he crossed over again. In order to realize his wish to return home, he accepted a mission from a guy who claimed to be a god - to collect 9999 Shikon Jade fragments.
When she was hesitating whether to jump into the well - Hey, hey! That's imaginary!
She was extremely convinced that this world was a virtual world, but she became an unwed mother pregnant with a child with heterochromatic eyes. The little life that came out of her belly shaken her faith.
Xun Wanxi: Didn't you tell me it was "InuYasha"? How could there be any emptiness!
God: I didn't say that the task I gave you is to collect the Jade fragments of the Four Souls.
Xun Wanxi: I quit, I want to spend time with my son.
God: Your mission must be completed.
Xun Wanxi: Why should I listen to you?
God: If the mission cannot be completed, obliterate the existence named Kondo Yakumo. You know, all I have to do is press a skill key by mistake...
Xun Wanxi: - -convex
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PS1: I have only watched the animation, and I will ignore any discrepancies with the original work.
PS2: The plot of Death is basically set in the present world.