Book Off is Japan’s biggest second hand bookstore.
It buys books, games, DVDs, blurays, CDs and more and resells them.
They have locations nationwide and often have big English book sections.
Sometimes they even have retro games for NES, SNES and Gameboy.
The chain spawned second-hand furniture and goods called “Hard Off”.
(yeah, the childish side of you just giggled, admit it.)
You can find games, audio/visual, PCs and more at Hard Off.
And there’s the vaguely named “Hobby Off” which has toys and figurines, for example in Akihabara.