I grew up watching Naruto. I used to be OBSESSED with Naruto. Part of my obsession was the cast but also a loveable main character.
I think my favorite moments will always be when they trained like hell and back, and gets super strong, and saves the day at the very last moment (hello, I'm looking at you DBZ). Super cliche, but there's a reason why it's awesome.
My favorite arcs always tend to lean on the second MC betraying the cast.
For techniques, anything pretty. Hahaha - like when I watched Black Clover, and Noelle used her water magic armor.
Sorry if I'm dropping all of these anime reference!