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tanjiro oh sick and old tanjiro there he sat on the ship which the UAC carried him he was going to a place which he never been to new york aka the us of a. the only thing that sucked about it that it was now just ruins. he was now in his 120s even though he was old he still practiced his breathing technics which were the first thing the UAC saw when they captured him now they were going to see how he faired against demons, he never fought before.
as they exited the ship tanjiro took a deep breath and jumped the first demon he stuck was just a zombie but there was more a skeleton demon with rocket launchers attacked sending them towards him.
he in return used his fire breathing to slice the demons head off then he headed towards the other zombies slicing them to bits he continued fighting the demons until he started getting tried they started to surround him now he knew he was dead so he closed his eyes and waited for his death but a large man n green power armor jumped in front of him. the man was much quicker when killed the demons. blood filled the ruins as the man foght as tanjiro saw this he had only one thought " is this man the doom slayer