Demon Slayer: I Am Ascending in the Demon Slayer Machine

[Demon Slayer + System + Mechanical Ascension + No Female Protagonist] Lin Xiao, who accidentally traveled to Demon Slayer, was picked up by Tanjiro's family. As a time traveler, he also has his own golden finger like other time travellers. His golden fingers can replace all parts of his body with various metal mechanical parts, thereby achieving mechanical ascension. And the system also told him that as long as he completes the final mission of wiping out Wu Mei, he can be sent to his original world and will also be given generous rewards. When he thought it could only be used on himself, an accidental incident made him discover that it could also be used on others. ———— "This... Isn't this right?!" Wu Kuan had a look of horror on his face. Many swordsmen around him had more or less transformed their bodies with machines, and the one leading the way was Lin Xiao, who had achieved mechanical ascension.