Oedo Kagaku Sosa Hatchobori No Oyu (Takarajimasha Bunko)

[Machine Translation] Oyu, who lives near Ryogoku Bridge in Edo, is asked by a long-established medicine wholesaler to clear her son's name after he was murdered, and she and her associate Denzaburo set out to investigate... But her true identity is Yuka Sekiguchi, a former office worker in her twenties. She has been leading a double life in Edo and modern times through the door of her house. Yuka uses modern science to solve the mystery, but how will she tell the truth to the people of Edo? The story moves back and forth between the two eras to get to the bottom of the case!

江戸の両国橋近くに住むおゆうは、老舗の薬種問屋から殺された息子の汚名をそそいでほしいと依頼を受け、同心の伝三郎とともに調査に乗り出す...が彼女の正体はアラサー元OL・関口優佳。家の扉をくぐって江戸と現代で二重生活を送っていたのだ―。優佳は現代科学を駆使し謎を解いていくが、いかにして江戸の人間に真実を伝えるのか...。ふたつの時代を行き来しながら事件の真相に迫る!