Kenichiro hates anything crooked and intends to do everything "the right way". He works for a mid-sized construction company as an engineer. In contrast to his straightforward character, he is as clumsy as one can be when it comes to romance. One day Kenichiro encounters Narumi; an overbearing, selfish, devilish girl. Kenichiro adamantly defies her and tries to show her the "right way", but Narumi never takes him seriously. However, as her thoughts and lifestyle push him around, he begins to get inspired and slowly attracted to her character that is the complete opposite of his.