Second hand CD Shopping

I’ll be in Japan studying abroad for a year. I adore Japanese music, and have a large amount of cds I’d like to buy. Preferably since my list is so long, I’d like to buy as many as I can second hand. Any recommendations for second hand cd stores in and around the Tokyo area?

Two quick suggestions: Disc Union in Shimokitazawa, also Book Off does CDs aswell as books (see this article) Shimokitazawa Thriftin' | Tokyo Cheapo