Maid-themed restaurant (shill outside is how all the waitresses are dressed)
AKB48 cafe/gift shop
Google it (The girl band, not the cafe) or I’ll add another post later
AKB means Akihabara, an area well known for electronics and geek/manga culture. The video games in the multi storey Sega gaming building has some crazy complex graphics (I tried to follow someone playing, guess I’m too old for that now).
Cat cafe. Pay extra to hang out with cats while you support your latte. I grabbed this flyer somewhere but forgot to look for it
Putting restaurants under the 4 storey high train tracks. Waste no space.
Toilet seat instructions. Wow, can’t I just flush? Admittedly, the warm seat is a nice feature when it’s cold…
I like this one: Wash your hands in this sink, which drains into the toilet tank. Brilliantly resourceful.