Series: Flying day (fukutsu-kun)
Original title: ふらいんぐでい
Source: http://www.pixiv.net/member_illust.php?mode=medium&illust_id=53787249
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Original title: ふらいんぐでい
Source: http://www.pixiv.net/member_illust.php?mode=medium&illust_id=53787249