追憶の闇精霊 / Tsuioku no Yamiseirei [The Reminisced Darkness Spirit]
Format: paperback bunko
ISBN-13: 9784840143868
Notes: Source title: 追憶の闇精霊 / Tsuioku no Yamiseirei [The Reminisced Darkness Spirit] (Seirei Tsukai no Blade Dance #6)