Will Eugeo Come Back?

Technically, if we're going into full wish-thinking, that can happen to Eugeo too. There is therefore no actual evidence to support that he's not coming back, unless Reki himself says he's never coming back.

Did Eugeo actually die?

Eugeo and a heartbroken Kirito shared one last conversation, and as Kirito finally recalls his memories of Eugeo and Alice during his first dive into Underworld, Eugeo succumbed to his wounds and passed away in Kirito's arms.

Is Eugeo Kirito's clone?

Eugeo bears a striking resemblance to Kirito, with the only difference being the color of their hair and the shape of Eugeo's eyes. Because of how similar they look, some fans claim that Eugeo may be a Fluctlight copy of Kirito that was made when he went into a coma and entered Project Alicization.