Similar as in...what?
Revenge adjecent plot?
-Body switching, finding out what happened.
https://www.mangago.zone/read-manga/geu_kkeute_issneun_geos/
-Making up for the past.
https://www.mangago.zone/read-manga/park_hanhoo_s_manager/
-Showbiz related.
https://www.mangago.zone/read-manga/sing_on_the_water/
Maybe you mean about the dark side of showbiz and questionable sponsorships.
(First two are probably the most similar to Payback)
-This one comes with a side of revenge!
https://www.mangago.zone/read-manga/in_the_private_room/
-Wouldn't you guess it, this one comes with revenge as well!
https://www.mangago.zone/read-manga/limited_run/
-This one is a little more complicated and dark, but beautiful as well!
https://www.mangago.zone/read-manga/exotic_love/
Maybe you mean the relationship dynamic of completely obsessed top (borderline yandere) and strongish bottom?
-Esperverse, with fantasy New York.
https://www.mangago.zone/read-manga/big_apple/
-Completely fantasy with transmigration and a weird religion!
https://www.mangado.me/read-manga/salvation/
-Mafia(ish) about a money launderer with his mafia boss client.
https://www.mangago.zone/read-manga/mayday_mayday_mayday/
-Super mafia about a lawyer and a mafia boss. (Warning: very toxic, very hot, but honestly, most of this recs are the same)
https://www.mangago.zone/read-manga/roses_and_champagne/
-Guideverse!
https://www.mangago.zone/read-manga/b_class_guide/
As a bonus, Imma just throw in Kill The Lights. It's not very Payback-y, but it's close enough.
https://www.mangago.zone/read-manga/kill_the_lights/
Enjoy!
damn thank u!
similar recs like payback?? https://www.mangago.zone/read-manga/payback_1/