Undead Unluck: The gimmick of using adverbs is unique, + the way the characters also use their abilities is quite unique. Like Andy smashing his legs and using the regenerating force like a spring to move. Psyren: Psyren has a pretty cool power system, but it like Bleach and JJK is very inspired by Togashi, not to say that's a bad thing. Nen is a very cool and simple-to-understand power system, with tons of uses and techs. PSI has a similar setup with Trance, Burst, and Rise types + Nova. And the ability to 'program' powers and abilities is pretty cool.