New sword day is better than Christmas, your katana cuts left some superb statics, great job!, also, it seems to be a new tradition to cut the box the sword came in😁
You can search "The Last Samurai - preparing for the last battle" to see the origin of those characters (今古有神奉志士). It's the engraving on Tom Cruise's sword that was made for him before the final battle. Of course it seems to be some Hollywoodian concoction since there's no way those characters say "I belong to the warrior in who the old ways have joined the new". They were probably shooting for that, but there's no belonging or warrior in there, and the grammar seems to be more akin to Chinese than Japanese. Also the sword he got does not seem to be a replica of the sword from the movie, just the engraving is the same.