Taisho Shinkon Roman: Gunjin-sama wa Ubu na Tsuma wo Shuuchaku Junai de Someagetai

An illegitimate daughter lies about her identity to marry a captain in a strategic marriage, but she's doted on and showered in his love... "I'm upset because your wet hair is so captivating." It is the Taisho era and Kaede, who was treated as a maid even though she comes from a good family, is married off to Yukisada, a military captain from a noble family, to save her family's business. However, she must lie about her identity to marry him as a "proper" young lady. Her true identity must absolutely not be revealed. Her married life begins with secrets. Although she feels guilty, Kaede begins to fall for Yukisada, who dotes on her and is overprotective. (Source: MangaPlaza)