Sister Golem! The Final Sister War of an Otherworldly Archaeologist Who Is Loved Too Much by His Self-Proclaimed Beautiful Sister Golem and Can Only Sleep for Eight Hours a Day

In the land of a reborn otherworld, the protagonist—Jandalum—had decided to become an archaeologist. This was a wish from his previous life. Before Jandalum, who loved history and relics, a self-proclaimed sister golem appears. This encounter was inevitable and signaled the beginning of the world’s movement. —The world is being invaded by sisters. Surely, this has been happening since ancient times. Sister x Otherworldly Adventure x Ancient Romance x Robots—this is that kind of story.