![1boy 1girl comic fuukadia_(narcolepsy) greyscale hat hieda_no_ashichi japanese_clothes kimono monochrome shameimaru_aya short_hair skirt tokin_hat touhou translated rating:s score:2 post #2102800](/cdn_image/preview/f4/1a/f41a648eee5cb1747f92160a6054b308.jpg)
Japanese title: 悠久からの追憶
Seems to be a Pixiv manga adaptation of post #1600427 (which is a doujin light novel.)
Sample of the original light novel can be read here:http://www.pixiv.net/novel/show.php?id=3186842
Series largely revolves around Aya and her relationships with Hieda no Amu and Hieda no Ashichi.
Eventually released on C86 and C87.