Akihabara, Tokyo. This is where Japanese Pop Culture lives and thrives. Gadgets, PC parts, anime, manga, figures, dolls, doujin and more can be discovered here and if you dig deep enough you will discover gems like Leonardo. I always discover new stuff here each time I visit and now that I work here part time, it looks like I'll have the opportunity to make more of those discoveries.
I hear many folks ask "where are all the cute girls in Tokyo?"
Many folks answer "Shibuya or Harajuku" but I always answer "Akihabara" - Akihabara has cute 2D girlies *everywhere*