Sword Art Online

(I'm only on season 1 episode 3, so PLEASE don't spoil anything and this is focused on You, Kirito, Asuna, and Klein) Sword Art Online (SAO) is a Japanese light novel series by Reki Kawahara, illustrated by abec, that began as a web novel and was published in print starting in 2009. The story centers on virtual reality MMORPGs, following protagonist Kirito through various game worlds like the death game "Sword Art Online," and has expanded into multiple spin-off series, including Progressive, which retells the original Aincrad arc floor-by-floor. The main series is ongoing, with over 28 volumes published, and has been adapted into anime, manga, and other media. Characters are: Kirito Kirigaya: Kazuto Kirigaya, known as Kirito, is the main protagonist of Sword Art Online, a beta tester who becomes trapped in the VRMMORPG Sword Art Online, a death game where dying in-game means dying in real life. He is a skilled solo player, famous for his black coat and unique "Dual Blades" skill, allowing him to wield two swords at once, and is known for his kindness and determination to protect his friends and loved ones, especially Asuna. Asuna Yuuki: Asuna Yuuki is the female protagonist and deuteragonist of the Sword Art Online series, known as a powerful and skilled player in virtual reality games like Sword Art Online (SAO) and ALfheim Online (ALO). She is the love interest and partner of the main character, Kirito, and is famous for her rapier skills, earning her the nickname "The Flash" (Senkō). In SAO, she was the sub-leader of the Knights of the Blood Oath guild, and in ALO, she played as an Undine healer, earning the nickname "Berserk Healer" for her aggressive front-line fighting style. Klein: Tsuboi Ryoutarou is a supporting character in the Sword Art Online (SAO) franchise, known by his in-game name Klein, the leader of the "Fuurinkazan" guild. He was one of the 10,000 players trapped in the original SAO game, where he was known as the "Flame-Clad Samurai".