[img]http://i.imgur.com/Nl7WBQc.gif[/img]
Hue.

If Arara was a more calculating bitch, she would totally find Christopher, sell Alistair out to him, and then have Christopher and his gang just break the shit out of Daiki, just so she can do her devil's advocate of "Oh, looks like your skills weren't enough after all. Wanna train with me?"

And all things considered, Shingeki isn't even a good example of 'out of necessity'. Hamazura from Index is probably the closest thing to 'skill and practice' I can think of, because Shingeki has that whole titan-shifting thing, while SAO is just OP Kiritard and gears.