A pachinko パチンコ and slot machine parlour. Legally you can't win money at such venues, but there's an arrangement whereby the prizes you win can be exchanged for cash at separate stores located in convenient proximity.
Akihabara 秋葉原 abstract, the organised chaos of the local electricity network.
Looping back, a shot down the opposite direction of jumbo. An hour of spelunking stores was enough to get a taste of how one's particular interests could be served to the smallest of minutia, so I started back to the station before fatigue set in. The densely stocked shops would have made for striking wide angle views, but many had signs requesting a refrain from photography, and I was happy to comply.