Danbooru-based image board with a specialization in high-quality images.
akiyama_mio bra hirasawa_yui k-on! kotobuki_tsumugi megane nakano_azusa pantsu rm tainaka_ritsu yamanaka_sawako

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... after having an image of 1600x800 or something deleted, I feel inclined to call hypocrasy on this image Radioactive ;p
This has been proven false as of ep 10. Ritsu's are bigger than Yui's.
There is also a version with Ui and Nodoka (both bigger than Yui).