Sword Art Online: Hollow Realization

Sword Art Online Hollow Realization takes place in an alternative universe in which after beating Heathcliff, the players continue to remain trapped in the Aincrad world. But the main story focuses on an NPC (which later is named Premier) is helped by Kirito and Asuno by learning about her own identity. Similar to Yui and of course, many other familiar faces as well as new ones were available in this action rpg genre.