Journey: Reunion (KNY/demon slayer AU)

After the events of "Cookierun: Journey", five years later, another adventure takes place in the world of "Demon Slayer". A boy named Journey, moves on forward to find his kind, a forgotten race similar to humans called Aetherians. His personal quest turns into a rather demonic adventure as he tags along with Tanjiro, Zenitsu, and Inosuke! Along the way, they will also learn a thing or two. Even learning that there was more than just one world... The demons are also growing rather curious to the foreigner from another world, little do they know... This boy also happens to be a reincarnate of someone rather unexpected.