Where to buy wool clothes in Tokyo

Hi people, life circumstances have lead me to japan without passing at home, I have only summer clothes with me and need to get warm winter clothes.

I'll have a few days in Tokyo (I'll be staying in shibuya)

I don't like to overconsume so id like to buy things I'll want to use for the next couple of winters, and I won't have too much time to shop around so I need to be efficient!
I have a list and most of the stuff i will get at sport shop or camping shops (they are always my first stop in japan)

But i am looking for some specific wool clothes:

I am looking for:
– 100% Merino base layers
– 100% Merino/wool sweaters (any price, I am aware these are expensive, but obviously if there are anywhere that sells them cheaper I'm a taker)
– wool socks (high % of wool if possible but smartwool brand would also be fine)
– Wool coat (High % of wool) (this one is a big expense I know. But I honestly need for the rest of my life so it's a good opportunity)

Where should I shop for these?

I really really thank you for helping out!! 🙏 🙏🙏🙏