The hivemind is conquering for me? - Chapter 14: Gene enhancements

Marked by the cursed Darksign, Naruto Uzumaki finds himself tethered to two worlds: the unforgiving lands of Dark Souls and the shinobi realm of ninja. How will a world of Dark souls face a Chosen Undead with chakra? And how will the shinobi world confront a warrior reborn in the Lands of Lordran?

Merged into the body of External Disciple Chen Yu was the heart of a demonic god.The heart is the core of life, the most fragile vital organ. To Chen Yu, however, the heart was his greatest strength, granting him power and potential beyond demonic and divine beasts. Here on out, we follow him as he embarks on a mysterious and wonderful journey.

99 is one, and nine refinements are returned to Xian.

A young town boy, stepping on Xiuxian Road, is not a family, no gold fingers, with his own determination and wisdom, the nine major cultivation system, the nine realms step by step to the peak, and finally ninety-nine one, the achievement of true immortal.

- Description from Uukanshu translation