The main characters of Secchubai include the young patriot Motoi KUNINO and his fiancée Oharu TOMINAGA, with the story developing in the context of the Freedom and People's Rights Movement in those days.
青年志士国野基（くにのもとい）とそのいいなずけ富永お春を中心人物とし、当時の自由民権運動を背景とする。