Danielle C.
Yelp
Book Off is a chain of stores that sells a lot of things like books, DVDs, movies, and even old electronics. If you like any of those items, this place is heaven for you. The lower levels are another store.
I am primarily interested in books so I wandered around the books section for quite some time. Everyone was reading manga. I actually found some that I was interested in and purchased a few. But it definitely helps if you know how to read some Japanese since there are like no ENGLISH signs. I was able to piece together some signs with my broken Japanese.
The books here are so so so cheap. Most books were around ¥100-¥300 which is crazy. I wish books were that cheap in the States.