Nano List (en) is a webcomic about a boy named Pen who wakes up with no memory and discovers he has the ability to see and interact with "nanomachine ghosts"—the lingering data of deceased people. He is taken in by a kind woman named Momo, who runs a repair shop, and the story follows their daily life as they help lost ghosts find peace in a futuristic city that has experienced a mysterious disaster. Readers enjoy it for its gentle, slice-of-life tone combined with soft science fiction, the deep emotional beats of helping spirits resolve their regrets, and the heartwarming found-family bond between Pen and Momo.