While Lucy was busy destroying the robots that surrounded the group of cultivators, Arthur was transported inside Timos' world, which was that very peaceful forest devoid of any dangers.
He didn't willingly teleport, it was the Dark Blade's doing as it wanted to reunite with its partner as soon as possible. It is no longer dormant and could be said to be whole again and, as Timos said, if the blade wants to fight alongside Arthur, it'll naturally call for him when the time is right.
Unfortunately, Arthur wasn't the only one inside this miniature world. Two other presences immediately sensed Arthur's arrival and appeared beside his body within seconds.
They looked like two young human males, bright and short green hair and identical facial features, they were, without a doubt, twins.
They didn't wear any sect or clan-related clothes, just casual grey leather outfits.