Taishou Rouman: Oni-san Yameteee!!

Fifteen-year-old Ruku Minatomachi is an ordinary high school student living in Yokohama with a singular, passionate ambition: to travel the globe and savor the finest gourmet cuisine the world has to offer. Her carefree life takes an extraordinary turn when her parents reveal a stunning secret about her true nature. Far from being a typical teenager, Ruku is actually a highly efficient android equipped with the remarkable ability to travel through time. Armed with this startling revelation and her new capabilities, she embarks on a daring journey into the past, setting her destination for Japan’s Taisho Era between 1912 and 1926. Her mission is deeply personal, as she seeks to locate her grandfather during this vibrant historical period. However, her arrival in the early twentieth century quickly leads to an unexpected encounter. Shortly after materializing in the past, Ruku crosses paths with a mysterious figure known only as Oni-san. Before she can fully orient herself or begin her search in earnest, he sweeps her away to his own domain. Suddenly thrust into an unfamiliar world under the control of a powerful stranger, the young android must navigate the challenges of the Taisho period while trying to fulfill her original quest.