Am I Dumb?

[Texa]

snip

Brah I'm not saying you're wrong I'd just genuinely like to read into the what you're talking about on my own since I haven't heard of it before. You don't need to made multiple replies to call me out over the exact same thing :/

[Mysticdraggon]

there are usually three reasons

the first reason, as most swords are, is that the way a katana is attached to the waste is a rope. as it hangs, the bend is pointed upward.

the second is entirely for the blade's quality. if the blade rests on a scabbard or is drawn quickly as it grinds against the scabbards sides, the blade will dull very quickly.

another reason is that the position is completely necessary for specifically a one-sided blade. once unsheathed correctly, the blade is already pointed toward an enemy. of course this is only the case if the wielder wants to swing from head-to-toe. if the wielder wants to strike from toe-to-head, he/she would take a stance and position the scabbard up-right before striking straight from the blade's sheath.

[Gumbercules]

curve upwards for the unsheathing, think when you are unsheathing you actually "twist" scabbard away from your body a bit to fling the blade a bit. You are pretty much using this "technique" to compensate for the extra length the curve itself adds to the blade.

[Iveriad]

Well, wikipedia explains it :
https://en.wikipedia.org/wiki/Katana

The rise in popularity of katana amongst samurai came about due to the changing nature of close-combat warfare. The quicker draw of the sword was well suited to combat where victory depended heavily on short response times. The katana further facilitated this by being worn thrust through a belt-like sash (obi) with the sharpened edge facing up. Ideally, samurai could draw the sword and strike the enemy in a single motion. Previously, the curved tachi had been worn with the edge of the blade facing down and suspended from a belt.

Storage and maintenance[edit]
If mishandled in its storage or maintenance, the katana may become irreparably damaged. The blade should be stored horizontally in its sheath, curve down and edge facing upward to maintain the edge.