Killua has a special move that can't be cancelled out of, however it is jump cancelable meaning you can cancel it into grounded specials if you do so before he leaves the ground (including into the same special move). This is some next level Kusoge

white boy neutral

idk if you know this but you can jump while moving the direction you wanna go, then turn your character with A/D keys and the S key, then press elusive jump quickly after without touching the camera. It's really convenient once you get used to it