If you happen to be in the Tachikawa area, you may want to pop in but you may be dissapointed if you make the trip expecting to see a "3rd Akihabara." I do think that over time, more otaku shops may move into the department store but for now its Kotobukiya, some shop that sells idol stuff and a large bookshop with loadsa manga. I was at Showa Kinen park which is in the same area so poping in was not a bother.
