Asuna does have a young appearance, and she debuted in Sword Art Online at just 15. By the time Ordinal Scale takes place, the heroine is barely 18, so the legality of the scene is not the issue.

At first glance, Klein is not the ... augmented reality game Ordinal Scale, he quickly rose to the position of number two player. Eiji may have been a formidable SAO warrior, but he was paralyzed ...