入れ替わり婚～冷徹御曹司の愛に溺れる～

Synopsis

It is the 6th year of the Taisho era (1917). Koyuki's parents died when she was very young, and she and her twin sister were taken in by her wealth-seeking aunt and uncle, who treated them like servants. When her sister falls into a coma, she is married off to Yuichiro, the son of the Morisawa Zaibatsu, who is rumored to be a violent man. Koyuki and Yuuichiro become a married couple under the guise of her sister Koharu. Koyuki wants to understand Yuichiro as his wife, even if only in a formal sense. Yuichiro, on the other hand, is puzzled and moved by his wife's modesty and purity, which he had thought to be showy...