Dear action+fantasy+supernatural story lovers

- “What Happens When the Second Male Lead Goes on Strike”/“When the Third Wheel Strikes Back” has a different setting, but definitely similar vibes

to you, the immortal
https://www.mangago.zone/read-manga/to_you_the_immortal/

Rest of the Holy Trinity:
https://www.mangago.zone/read-manga/omniscient_reader_s_viewpoint/
https://www.mangago.zone/read-manga/trash_of_the_count_s_family/
Regressor Instruction Manual is also often grouped with them but it has harem

https://www.mangago.zone/read-manga/the_world_s_best_engineer/
https://www.mangago.zone/read-manga/sss_class_suicide_hunter/
https://www.mangago.zone/read-manga/trapped_in_a_webnovel_as_a_good_for_nothing/

I have some bl recs that have a similar vibe, but I know you didn't want romance, but lmk if want them anyways