一對看似平凡的兄妹進入了高中，沒有人知道主角曾經喪失過有關過去的記憶....被捲入雙親死亡的記憶，僅剩唯一的妹妹與其相依相存。現在的他正享受著快樂的高中生活，但隨著時間的流逝，記憶漸漸恢復，主角該怎麼面對過去的種種和未來的不確定性呢...
Theme Song Performance (OP)
Series Production Director
Theme Song Performance (ED - tiaraway)
Animation Check (eps 1-8, 13), In-Between Animation (eps 7-8, 13), Key Animation (ep 13)
Animation Director (eps 5-6, 11)
Editing
Sound Director
Key Animation (ep 5)
Producer
Theme Song Composition (ED), Theme Song Lyrics (ED)
Producer
Key Animation (eps 2, 6, 13)
Key Animation (ep 13)
Sound Effects
Character Design
Music
Screenplay, Series Composition
Key Animation (ep 5)
Key Animation (eps 7, 13)
Storyboard (eps 6, 9-10, 12-13), Episode Director (eps 3-4, 9-10, 12-13), Director of Photography
Art Director
2004年 季度排名 #1
2004年 動畫總排名 #31
