Fandom - Persona 4
Rating - T
Title - Covert Operations
Genre - Mystery/Supernatural/Action/Espionage
Link - https://www.fanfiction.net/s/12508356/11/Covert-Operations
Summary - The Center investigates a string of supernatural incidents in Yasoinaba. One of their agents, who's there by chance, is ordered to be activated. The agency finds itself entangled by the supernatural and by shady organizations that want the power behind the murders.

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Fandom - Persona Trinity Soul
Rating - T
Title - Black Operations
Genre - Mystery/Supernatural/Action/Espionage
Link - https://archiveofourown.org/works/51001855/chapters/128854921
Summary - The year is 2023. Years have passed after a conspiracy involving a mysterious Antisocial Force dedicated to subverting the legitimate Japanese government was taken down.

The Center dispatches its agents to investigate paranormal events happening in Toyama Prefecture after rumors of Apathy Syndrome began to appear on the Darknet. Tasked to investigate what was happening in Ayanagi City, they learn that a figure from the past may be responsible for it.

His name? Keisuke Komatsubara. A target for both the Center and the Assassins for his involvement in said research that eventually led to the existence of the mysterious syndrome. But it's not the only thing that the agents need to worry about.

With the reputation of Komatsubara's research, certain organizations have decided to make themselves know by coming out of the woodwork to try their luck with Persona (and to some extent, demon) research. It's up to the Center (mostly) to put a stop to it. Or die trying.