Original Webtoon
It was in 1918 after the Great Kanto Earthquake. His older brother Tepyo, who adores his younger sister Sayo, and his firm sister Sayo, had no parents and lived with his family. However, they are both bloodless siblings. He picked up Sayo, who was a baby, and raised him. Although Saya has secretly thought about her brother, Teppei only finds a good marriage arrangement for Sayo. Saya knew that her wish would not come true. Meanwhile, a guest came from Tokyo to Oyashiki where Sayo works as a maid. A former military officer who achieved success in the business, she often has a family lineage and floats around looking beautiful, not in her mid-30s. Sayo, who was ordered to take care of him...!? A strange fate plays the three of them, Taisho Roman Mystery!