Safety, an apprentice angel magically bound to share a physical form with Risky, an apprentice shinigami, manifests through the emotional states of others—appearing only during moments of happiness or positivity. She dons a simple white robe with a forehead jewel and collar gemstone, her long blue-green hair (blue in the manga, cyan in the anime) secured by pink bands. Near-sightedness necessitates her glasses, and her height shifts between 13 cm in the anime and standard human proportions in the manga.

Tasked with spreading joy, she wields a bow and arrow that instills romantic affection in targets—a power that once misfired on a Pomeranian named Lani, sparking the dog’s unwavering infatuation with both Safety and Risky. This contrasts sharply with Risky’s duty to harvest souls during despair. Safety’s speech carries a polite, archaic flair, often ending with *desu no*.

Initially depicted as klutzy and naively idealistic, Safety evolves through her interactions with Risky and their human charge, Moe Katsuragi. When a supernatural force begins warping destinies, she initially acquiesces to these changes. But spurred by Risky’s defiance, she joins forces to disrupt predetermined fates, temporarily departing to face repercussions before returning to remain with Moe permanently.

Her dynamic with Risky shifts from comedic rivalry to interdependent partnership, mirroring their opposing roles in guiding Moe’s emotional journey. While Risky embodies darker impulses, Safety champions hope, balancing joy against sorrow. Her growth arcs from passive duty to proactive agency, particularly during pivotal confrontations with destiny-altering forces, underscoring her transition from inept apprentice to determined ally.