Ikebukuro area
From BOOK STORE WIKI
Junkudou japan main store
Huge. this bookstore has most books in Japan. they has a lot of genres and minor books too. you can use chairs. there are English books on top floor. locates in Ikebukuro South East.(take 4 minutes from Ikebukuro Sta.)
Libro
this locates in Ikebukuro East side building. that is why convenient in case rainy day. they have many casual books collection.
Tobu Department store bookstore
Ikebukuro Tobu Department store 7F
Sanseido
middle sized bookstore in the east side of Ikebukuro Sta. near the Seibu department store.
book off ikebukuro
along the sunshine St. 2-4 floors. It has also CD, DVD and video games.