So because Adjustment AU and Captain AU both take place in 2036 (at least. Adjustment does. Not sure about Captain.) that means every P5 character has to have their birthday adjusted by 20 years which gives me PRIME material to have characters show up in the Time Travel AU. Examples;
Maruki and Rumi are Ken's classmates (or at least in his grade). Maruki has the Potential but both of his parents are alive and therefore it wouldn't make sense to scout him for SEES but they are monitoring the Maruki Residence just in case shadows attack
Wakaba is Riku, Fuuka, and Kotone's classmate. Fuuka is acquaintances with her and Riku probably will end up being her friend. And maybe bring Futaba a picture? Who knows.
Sojiro works at Chagall Cafe and is a 2nd year college student. Riku and Katsuro quickly learn that Sojiro was very much lying about his abilities to get dates back in the day.
Katsuro has the misfortune of being classmates with none other than Masayoshi Shido himself. And unfortunately for him, Shido wants to be friends. He's annoying, persistent, arrogant- much like Akechi, who Katsuro despises. Oh, and Shido has a crush on Sojiro because @mypunkpansexualtwin 's headcanon haunts me every waking moment
