

From tamahagane to a finished katana. Become a swordsmith in Bakumatsu Kyoto—sumikiri, mizuheshi, folding forge, the quench, polishing—finish a Japanese sword with your own hands. A hardcore swordsmith simulator. It will not be easy.
Overview
From tamahagane to a finished katana. Become a swordsmith in Bakumatsu Kyoto—sumikiri, mizuheshi, folding forge, the quench, polishing—finish a Japanese sword with your own hands. A hardcore swordsmith simulator. It will not be easy.
Description
Become a swordsmith in Bakumatsu-era Kyoto.
Japanese Swordsmith is a hardcore swordsmith simulator built around the traditional path of Japanese sword making. Sumikiri, mizuheshi, stacking and welding, folding forge, steel construction, drawing out, fire shaping, clay packing, the quench, polishing, and mounting.
Not a minigame—this is real work.
Learn the traditional craft path and forge your own katana from tamahagane.
Take on shapes inspired by famous and fictional blades.
Sumikiri (charcoal cutting) — cut and prepare charcoal for the forge fire with your own hands
Mizuheshi (break & sort) — heat and hammer tamahagane, quench it, then sort the broken pieces
Tsumiwakashi (stack & weld) — stack fragments and forge them into a single billet
Tanren (folding forge) — fold and hammer to refine the steel
Tsukurikomi (construction) — layer jacket and core steels into the blade's heart
Wakashinobe / Sunobe (drawing out) — draw the steel to length and shape the kissaki
Hizukuri (fire shaping) — form the edge, spine, curve, and the rest of the blade
Tsuchioki (clay packing) — paint the clay line that will become the hamon
Yakiire (the quench) — quench the heated blade and lock in the hamon—one shot, no undo
Togi (polishing) — remove clay on the stone and bring out jigane and hamon
Koshirae (mounting) — fit tsuka, tsuba, saya, and finish the sword as a whole
Watch the forge fire, the color of hot steel, the state of every strike—and finish the metal at its best. If you aim for a katana that will not break, will not bend, and will cut true, that attention is required.
The clay line you place becomes the hamon. Whether it rises cleanly depends on the steel and the quench. The work you put in shows in the blade's face—hamon, jigane, and character.
Place key tools, furniture, tamahagane, steel in progress, and blades where you want them. Chase efficiency or atmosphere—build the workshop in your own style.
The path of the swordsmith is long and steep.
Can you forge a blade worthy of history?
Streaming, gameplay videos, reviews, and other video content featuring Japanese Swordsmith are welcome for both individuals and organizations.
Content from publicly available versions of the game may be streamed or uploaded without prior permission. Monetization through platform features such as YouTube or Twitch is also permitted.
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