"I've lost my memory, I'm estimated to be 13 years old, and I might be the last surviving member of the human race - but it's okay. I have everyone with me. I have Spike, Angela, Cleric, Reeves, and Trigger. So it's okay." One day, Haruka, a girl who lives in an abandoned building with robots that are like family to her, sees a girl who looks just like her. - Could it be that there is another human being alive besides her? After an extensive search, she finally meets the girl who introduces herself as Eva, but her true identity is... (Source: Kadokawa, translated)

Set in the year 2100, the story follows Yuisaka Azusa, a high school student whose brain was contaminated by nano-machines during a medical accident when she was a child. This accident granted her the "Ghost Drive"—a specialized cybernetic ability that allows her to access and interface with various electronic circuits.

Hibari, who works at a bento shop, married Ibuki Miwa, a kind but somewhat busy civil servant. However, his true identity is that of a hero who protects the peace of another world! From a blonde elf and a robust dwarf to a fluffy werewolf boss and even the spoiled daughter of a demon king, a steady stream of customers with their own unique stories keeps arriving. Hibari’s plan was simply to treat them with her signature home-cooked meals… but could it be that each dish she serves is actually saving the world!? A heartwarming and heart-fluttering fantasy of another world and newlywed gourmet adventures begins!