I'm not familiar with absinthe as far as thujone and brand, but I have seen it around. I live in Hiroshima by the way. There is a liquor store right next to the school where I work and they offer two or three varieties. Next time I go in there for some umeshuu or sake I will take a look and let you know. As far as where you can buy it, I would imagine most liquor stores. Have you checked Yamaya?