When starting the series, Shoji Gatoh commented that as the series' theme was "Boy Meets Girl." Gatoh worked in the order to keep that as the focus regardless of the several other conflicts the story presented. Gatoh and Shiki Douji had a close relationship in the making of the novels. Gatoh gave Douji freedom in the design of the characters such as Sagara and Leonardo who were given multiple traits. On the other hand, Gatoh also gave Douji references for "gentlemen" featured in the story.