hopefully this is a joke, giving a 10 year old a sword is extremely dangerous. there are plenty of mass shooters, a sword isn't going to protect him in the modern age. you need to buy this little guy a gun. a lot of people would say to start him off with something small, but i say get him used to something heavier with more kick first so he REALLY learns how to use it. it also ups the risk to himself and will make him more cautious, whereas with a smaller gun he might be tempted to twirl it (which is cool, but you can teach him how to do that later)

yes.

Give him a Real Longsword , not this Japano Dork shit. Or at least take an actually exotic weapon,

Aztec Glas Blade or something...

you waited until age 10?! you might as well send them off to be a pacifist monk!

Probably best to start em with a wakazashi and just make sure their bushido fundamentals are up to snuff.

There’s plenty more to the blade than the blade itself.

Hmm, what's his kenjutsu level? Anything below second kyu and he should still be using a wooden bokken.

Katana?! Unless based off Japan, people are gonna be generally wearing chainmail or plated armour, you'd be much better off with polearms imo

I get my friends kid's swords as baby shower presents.

If you follow my posting you know I'm not joking.

That said, idk what you start kids off with for katana but I imagine there are junior sized bokken and shinai out there.

https://www.gorgtech.com/shop/red-vs-blue-swords/

If you've got the scratch you can get the kid a set of these. They're absurdly high-tech artisan produced foam swords. They'll probably last for at least a year, likely longer. Gorg makes solid kit.

When I was in early-mid middle school, My mom bought me an extremely dull, decorative set from a thrift store when I asked her to. It rocked and I still like to pretend to do kata with the wakizashi. Most tweens are smart enough to not impale themselves. It is obviously a judgement call. Never give a child a sharp edge.