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the story is set 4 years after the events in the museum with the ending: "Forgotten Portrait", this manga has more than 1 chapter and it's still being releasedbased on "Ib" a really popular survival horror game made with RPG Maker.Original pixiv doujinshi:chapter 1: http://www.pixiv.net/member_illust.php?mode=medium&illust_id=27528401chapter 2: http://www.pixiv.net/member_illust.php?mode=medium&illust_id=27837197chapter 3: http://www.pixiv.net/member_illust.php?mode=medium&illust_id=28104954chapter 4: http://www.pixiv.net/member_illust.php?mode=medium&illust_id=28883068chapter 5: http://www.pixiv.net/member_illust.php?mode=medium&illust_id=29482581
