Naruto: From the Start, I Wield the Demon Eye to Measure Obito

In Year 51 of Konoha, when Yueshan Qingmu wakes up, he finds a System in his mind that doesn't belong to him.

[Resurrection Progress of the Vengeful Ghost: 25%]

[Ghost Eye · Active Skill · Each use will accelerate the resurrection]

[Natural Resurrection: +0.01% per hour]

He transmigrates to the world of Naruto, but the power he awakens is that of the vengeful ghosts from Mysterious Resurrection. Every time he uses the Ghost Eye, he loses a little of his humanity. Every hour he survives, the resurrection progresses a little further.

A former member of Anbu's Third Squad, he left the unit after all his teammates died on the Cloud Shinobi front. Now recalled to duty, his first assignment is:

[S-Rank Mission: Protect Fourth Hokage's wife, Uzumaki Kushina, during childbirth]

[Deadline: From now until the mission ends]

[Note: Top secret. Anyone who leaks information will be treated as a rogue ninja.]