Eugeo

Eugeo (ユージオ) is a protagonist in «Alicization Beginning».

Background
Eugeo is a wood cutter of Rulid Village and Kirito's best friend in the beginning. Kirito was then unheard of when their friend Alice was taken away. However, upon Kirito's return to Underworld, in which he has no memory, Eugeo is the first person Kirito (as Kazuto), encountered upon awakening. He is given the Sacred Task of cutting down «Gigas Cedar».

Alicization Beginning
He has been Kirito's friend since childhood, and had just recieved the Sacred Task of cutting the Gigas Cedar tree with Kirito. While having meal with Alice and Kirito they decide to travel to a cave in the Mountain Range at the Edge. They find ice in the cave, along with the bones of a dragon and the Sword of Blue Rose. On their way out they confuse the way out and see the battle between a Black Knight and a Integrity Knight. The next day along with Kirito he tries to save Alice from the Integrity Knight but they're inutilized by the villagers.

He is the first person Kirito encounters when he returns to Underworld and helps him find where to stay on the village. The next day, he shows Kirito the Sword of Blue Rose he brought from the cave in the Mountain Range, but they're unable to use it. He helps Kirito look for Selka when she escapes and fights the Goblins in the cave, but is gravely injured. Kirito and Selka save his life and after two days he returns to his task of cutting the Gigas Cedar, with Kirito's insistence he manages to master the use of the Horizontal Sword Skill and cut the Gigas Cedar in five days. On the festival organized to celebrate his feat he reveals that he wants to be a swordsman, just to be challenged by Jink to a duel to decide who will leave the village. With Kirito's advice he easily defeats Jink, and with Kirito they depart to Zakkaria.