With a series with so many fantastical elements like Sword Art Online, it can be easy to forget that Kirito's real name is Kazuto Kirigaya and that he actually lives with his family instead of off in some virtual world. With the final episode of Sword Art Online: Alicization - War of Underworld, we actually got to see what Kirito's parents think of his virtual journey. Because while we have seen Kirito grow into a god like hero by the end of War of Underworld, from his parents' perspective Kirito has been missing for a while.