When you find yourself trying to remember a show (or any works) that's on the tip of your tongue but just out of reach, come here - the collective brain of the TVTropes community can probably help. Post all the details you can remember (examples help). If you're looking for a trope, head over to Trope Finder. Have general questions about tropes? Visit Ask The Tropers!
The first few sentences sounded like Gundam Wing, but the rest not at all— what kind of special powers does the main character have? Do you remember what he looks like at all? Around what year was it when you first watched it?
I watched it in like 2011 but the graphics looked a lot older than that. The MC had a special power with his arms (maybe specifically his right arm), and he kinda looked like Chad from Bleach.
I wouldn't say it is Gundam Wing as I don't recall the characters having special powers (the Newtypes from the main franchise are conspicously absent, although Quatre can be somehow classed as a Newtype but I digress).
I'd say that it is s-CRY-ed (Kazuma kinda looks like Chad and his power do come from one of his arms, Ryuuhou - the antagonist - looks like Seto Kaiba)
Duo Chan I love you so fucking much rn
It is an anime where the first episode is like this guy and hey is jumping from somewhere down to fight or escape some bad guys or something, and a girl sees him bc she is in a plane that he passes on the way down, and the guy is the main character and the women is like a kinda main character but pretty side. Anyways, he is like a guy with a special power and he fights a bunch of guys in lab coats, so he is like a rebel. The main antagonist is his arch rival and he has a special power too (this guy semi-looks like Kiba from Yu Gi Oh). The MC has a "little sister" (orphan he found) that he really cares for, and she gets taken away by a super evil guy. Then she is revealed to have a power too, but unlike MC and antagonist her power is like a mental power. So they save her and then there is ending scene where she is suddenly like a young adult, but they other 2 guys (MC and rival (antagonist)) are still fighting, and she is casually using her power saying something like "wow things never change"