劇情上非常忠於原作小說，其中一項設定就是哥哥與各個妹妹分開居住，而每個妹妹都有各自的家。故事也不再以「兄」為主軸，改為由十二位妹妹為故事中心，主要環繞各妹妹對「兄」的想法。
劇情上非常忠於原作小說，其中一項設定就是哥哥與各個妹妹分開居住，而每個妹妹都有各自的家。故事也不再以「兄」為主軸，改為由十二位妹妹為故事中心，主要環繞各妹妹對「兄」的想法。
Producer
Episode Director
Editing
Theme Song Arrangement (ED)
Character Design
Theme Song Arrangement, Theme Song Performance
Original Creator
Storyboard (ep 8B), Episode Director (ep 8B)
Sound Director
Theme Song Performance (OP 1)
Key Animation (eps 9, 13)
Key Animation (OP)
Key Animation (ep 5a)
Storyboard (eps 2, 4, 6, 13)
Music
Script (eps 3, 5-8, 12)
Storyboard (ep 10)
Key Animation (ep 6b)
Key Animation (ep 6)
Animation Director (eps 2, 13)
Theme Song Performance
Animation Director (eps 8, 11), Key Animation (ep 11)
Key Animation (ep 10)
Assistant Producer
Key Animation (ep 5)
Animation Director (ep 13)
Key Animation (eps 7, 12)
Amamiya is kawaii!
完結散花～～好看！