Hi Abdon, Sorry to post this here. I tried to answer your PM message to me twice, but each time my email was rejected. So I'm posting my reply here. Hope you don't mind:
Thanks for the message.
How's the weather up in Aomori? Any sign of spring yet?
The last time I used an Arai tent was back in 1984, after ten years of owning it. It was a single-wall, non-breathable dome tent and the only thing I used for all that time, for everything. I've had so many tents since then I can't remember them all, but I've seen a lot of Arai tents around in Japan. They're very well made, perfect for Japanese conditions, more readily available than most tents from abroad (plus some of them use Gore-tex, which you can't get in the States). Just they are very expensive! And the vestibules a tad small. Otherwise a really great buy. Have you started using it yet? Post pictures on the forum if you can.
I'm looking for a new mountain tent right now. Arai is one I'm considering, though I think I might end up with a Kamoshika Espace instead, unless I go with a non-Japanese brand.