Indeed, at first, Achill had only known one way to use his power: channeling magic into his Zanpakutō. But as he grew stronger, having to Requip a Zanpakutō to fight every random opponent was far too much overkill. It felt like shooting mosquitoes with an antiaircraft gun!
Later, after resolving the lingering burden in his heart at the Tower of Paradise, Achill spent his free time doing more than freeloading meals at Fairy Tail. He also read quite a few books on magic and finally managed to work out some basic ways to use magical power himself. Of course, they were only very basic techniques: condensing the magic inside him into external balls of light that could explode or provide illumination, locks of magical light that could bind objects like ropes, beams of magical light that could pierce enemies, and pillars of light formed by pouring out large amounts of magic—a whole series of simple, basic methods for finely controlling his internal magic!
With those basic applications as support for dealing with minor opponents, and his Zanpakutō Requip-based God of Death Magic as his main method of attack against the heavy hitters, he could now handle most enemies! Mid-level opponents still frequently left him in an awkward position, however. Against anyone his magic control could not handle, he had no choice but to use his God of Death Magic and Zanpakutō. It was no longer shooting mosquitoes with an antiaircraft gun, but it was still using a butcher's cleaver to kill a chicken. That awkward situation finally ended only after the training journey he took to stabilize the Hollow inside him—
Instead of directly Requipping an entire weapon, he would Requip only the unique attributes of a particular Zanpakutō! The inspiration came from watching Erza make partial changes to individual