Asahina Mikuru (朝比奈 みくる) of The Melancholy of Suzumiya Haruhi. I actually vectored this image once back in 2007. The original black and white is from a doujinshi TimTim Machine No.17. I wanted to make it more up to date with my current look of vectors. I also found an image of her wearing what appears to be the same bikini, possibly the inspiration for this image, so I colored it to match.