Myriad Worlds: Forging Begins in the Rurouni Kenshin World

Any Stories Where the Protagonist Founds a Guild with Few Members, but Every One of Them Is Insanely Strong?

Any urban or online-game novels where the protagonist creates a guild with few members, but every one of them is insanely strong? Something like "The Mechanical Era".

Japanese Style, Anime, Swordsmanship, Tokyo, Yokai

Looking for a Masterpiece About Forging, Analysis, Disassembly, Synthesis, and Imbuement

Any Novels About Transmigrating to Japan's Edo Period and Going on a Rampage?

The protagonist should know styles like Ashina swordsmanship and the Flying Heaven Imperial Sword Style!

Online Game Novel With a Blacksmith Protagonist

I don't want a blacksmith who kills a boss solo. I want someone who makes weapons and teams up with others to earn money. They can be somewhat famous, but not too famous. No constant announcements, please.