故事发生在云集着优雅大小姐的私立贵族学校藤崎女子中学，人称“野性的丽人”的仓桥莉子（沼仓爱美 配音）有着男孩子般狂野以及正义感十足的个性，某一天不小心撞破了学生会会长真木夏绪（赤崎千夏 配音）的秘密。这个长得漂亮、头脑聪明的会长“藤姬大人”，不仅是老师的得力助手，还是众人憧憬的对象，实际上她却在学生会室里日以继夜地进行“恋爱研究”！因为被真木拜托，莉子当上了学生会会长助理，每天和真木进行恋爱研究与实践。个性过于害羞经常躲起来、因此成为妖精般的存在的学生会书记棚桥铃音（水濑祈 配音）也加入了她们。 学生会原会长榎本结子（佐仓绫音 配音）和原会计水嶋沙依理（大地叶 配音）化解了与真木她们的矛盾后，也加入了“恋爱研究所”。五名个性迥异的少女，就此展开了恋爱研究活动！
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