5 boys and girls full-shuffled! 5-way love pentagon comedy! At clubhouse room 401, there gathers "anything goes" members of the culture study society. Pro-wrestling otaku Taichi Yaegashi, mysterious beauty Iori Nagase, cool Himeko Inaba, the clown Yoshifumi Aoki and fancy-loving Yui Kiriyama found the noisy but calm days suddenly come to a halt....