Yamatomichi gear in Tokyo? Specifically jackets, the UL All-weather.

So as the title says I'm currently in Tokyo until Monday afternoon, I met a guy on a run earlier with a jacket from a brand called Yamatomichi (I think locally it's mountains and roads?) after some searching it seems it's the Yamatomichi UL All-weather jacket. I've checked their site and they, do post abroad (I live in the UK) but as the jacket is quite pricey and delicate import fees and the like will be quite brutal. Anyone know of local stores in Tokyo and around 1 hour around it that might stock this brand? Their site does list a couple of places Bamboo Shoots and Hikers Depot I plan to visit over the weekend.

Any others that people would recommend checking? Unfortunately there's a few on Mercari and some other sites but doubtful they'd arrive in Tokyo by about lunchtime on Monday. Same with ordering directly from them not sure it'd arrive on time and not sure what would happen if it didn't.