以第一名的优异成绩进入私立樱南中学的叶山奈由，在入学当天不幸摔倒，因而被同学看到了很花哨的内裤。猜测奈由在做援助交际的神宫寺弥子和白石遥，为了确认真相而去和她接触。三人不慎从楼梯上滚落下来，而这时奈由却兴致满满地盯着她们裙子下露出的内裤，甚至之后还给遥提了建议。后来她们终于知道奈由只是非常热衷于内衣的有点奇怪的女孩子。<br /> 一看到周围的人穿了不合适的内衣就想要去干涉的奈由，决定设立一个关于研究正确选择、穿着内衣方法的“内衣部”。虽然因为某些问题曾一度失败，但在遥、弥子、还有小町和水野老师的帮助下，终于设立了新的“内衣同好会”。在这个故事中，对内衣有着强烈癖好的主人公奈由，为了让所有人了解到正确穿着内衣的重要性而不断奋斗……
以第一名的优异成绩进入私立樱南中学的叶山奈由，在入学当天不幸摔倒，因而被同学看到了很花哨的内裤。猜测奈由在做援助交际的神宫寺弥子和白石遥，为了确认真相而去和她接触。三人不慎从楼梯上滚落下来，而这时奈由却兴致满满地盯着她们裙子下露出的内裤，甚至之后还给遥提了建议。后来她们终于知道奈由只是非常热衷于内衣的有点奇怪的女孩子。<br /> 一看到周围的人穿了不合适的内衣就想要去干涉的奈由，决定设立一个关于研究正确选择、穿着内衣方法的“内衣部”。虽然因为某些问题曾一度失败，但在遥、弥子、还有小町和水野老师的帮助下，终于设立了新的“内衣同好会”。在这个故事中，对内衣有着强烈癖好的主人公奈由，为了让所有人了解到正确穿着内衣的重要性而不断奋斗……
Animation Director (ep 4)
Key Animation (ep 1)
Background Art (eps 1-3, 5-9, 11-12)
Key Animation (eps 3, 10, 12)
Key Animation (ep 3)
Director
Key Animation (ep 3)
Key Animation (ep 4)
Episode Director (ep 2)
Screenplay (eps 4, 6, 9)
Script (eps 7, 10)
Animation Director (ep 12)
Key Animation (ep 12)
Episode Director (ep 6)
Art Director, Background Art
Producer
Key Animation (ep 12, ED)
Key Animation (ep 10)
Episode Director (3, 9)
Animation Director (ep 10, 12), Key Animation (3)
Sound Director
Planning
Script (eps 1-2, 5, 8, 11), Series Composition
2nd Key Animation (ep 12), Key Animation (ep 6)
Planning (Planning Assistance)
Key Animation (ep 2)
In-Between Animation (eps 1, 11-12)
2nd Key Animation (eps 1, 5), Key Animation (ep 11)
2nd Key Animation (ep 11)
Key Animation (ep 6)
Key Animation (ep 3)
Key Animation (ep 6)
2nd Key Animation (ep 8), Key Animation (ep 7)
Key Animation (ep 12)
Publicity
Key Animation (eps 4-5, 11)
In-Between Animation (ep 5)
Episode Director (ep 5), Key Animation (eps 3, 10)
Key Animation (ep 4)
Character Design, Chief Animation Director (eps 3, 5-6, 9-12), Animation Director (ep 1), Key Animation (ep 1)
Recording Engineer
2nd Key Animation (ep 1, 11)
Editing
Episode Director (ep 4)
Key Animation (eps 10-11)
Key Animation (ep 2, OP)
Original Creator
Music
Key Animation (ep 4)
Key Animation (ep 11)
Key Animation (eps 1, 10)
Planning
Key Animation (eps 1, 12)
Key Animation (eps 1, 3)
Animation Director (ep 2)
Key Animation (ep 7)
Key Animation (ep 4)
Animation Director (eps 7-8)
Background Art (ep 11)
Animation Director (ep 11)
Key Animation (ep 4)
Animation Director (ep 6)
Background Art (ep 10)
2nd Key Animation (eps 1, 12)
Key Animation (ep 12)
Key Animation (eps 2, 6)
Key Animation (OP)
Theme Song Lyrics (OP, ED2)
Key Animation (ep 5)
Storyboard (eps 7, 9-10), Episode Director (ep 10)
Theme Song Arrangement (ED), Theme Song Composition (ED)
Theme Song Performance
Theme Song Performance
Theme Song Performance
Theme Song Performance
Key Animation (eps 5, 11)
Key Animation (eps 5, 11)
Key Animation (ep 2)
Key Animation (eps 1, 12)
Key Animation (ep 5)
Key Animation (ep 9)
Key Animation (eps 7-8)
2nd Key Animation (ep 8)
Key Animation (eps 1, 5, 10, 12), Assistant Animation Director (eps 4, 6)
2nd Key Animation (ep 8), Key Animation (ep 7)
Key Animation (ep 2)
Episode Director (ep 7)
Key Animation (ep 1)
Key Animation (eps 7-8, 10)
In-Between Animation (eps 1, 5-6, 10-12)
Key Animation (ep 6)
Key Animation (ep 9), Assistant Animation Director (ep 9)
In-Between Animation (ep 1)
Planning (Planning Assistance)
Key Animation (eps 1, 5, 12)
Key Animation (ep 9)
Key Animation (ep 9)
Key Animation (ep 9)
2nd Key Animation (ep 9)
Animation Director (ep 5), Key Animation (eps 1, 12, OP), Assistant Animation Director (eps 6, 12)
Key Animation (ep 5)
Amamiya is kawaii!
完結散花～～好看！