[Although several years had passed since you killed that old monster Kenjaku, putting the plan to purge the "incarnated ancient sorcerers" back on the agenda and carrying it out was not actually all that complicated.]
[After all, the origin of these ancient ghosts returning through borrowed bodies was pinpointed precisely around the time you killed Kenjaku.]
[With modern society's vast, tightly woven information networks, all it took was a few mundane methods: conducting a concentrated investigation and retrieving medical files, missing-person reports, and unusual police reports from across the country around that period. Like using a magnet to collect iron filings from the ocean, you could identify a large initial pool of potential targets.]
[From there, the criteria for further screening were equally clear. After that point in time, people who had been living normal lives suddenly underwent drastic personality changes, lost their memories, or even abandoned their spouses and children and inexplicably left their original surroundings. Some were even more blatant, suddenly parading through modern cities in bizarre clothing from a thousand years ago... These were all the most naked signs of incarnation.]
[Besides, Jujutsu Sorcerers in this world were like searchlights in the night, rare enough to stand out painfully.]
[If even a handful of unaffiliated Jujutsu Sorcerers suddenly appeared in society without any registration at Jujutsu High or Window, they would certainly be conspicuous.]
[Following the trail to investigate them was, in fact, absurdly easy.]
[You mentally reviewed these unregistered anomalous targets. They fell into just three categories: first, unaffiliated sorcerers living in remote places who had awakened by chance through an ancestral reversion in their bloodline and knew nothing of Jujutsu Society's common knowledge; second, modern Curse Users with criminal records who concealed their identities to evade capture; third, your actual targets for this operation-ancient sorcerers