TV-Series
Description
Mayu is a shinki, or divine weapon, who serves the god of learning, Tenjin. She was originally a shinki of the stray god Yato, who gave her the name Tomone, but she eventually left him because she could no longer tolerate his lazy, irresponsible nature and his casual talk about killing. After leaving Yato, she became one of Tenjin's shinki under the name Mayu. In her former human life, she lived in Japan during World War II; she had a husband who was drafted into the war and a daughter named Kiyoko. Her time with Yato is regarded by her as an embarrassing or regrettable chapter of her existence.

Mayu is characterized by a strong sense of honesty and justice. She is principled, responsible, and self‑controlled, with a tendency toward perfectionism. Her straightforward personality means she does not hesitate to voice her disapproval when she sees laziness or wrongdoing. This sense of moral clarity was what drove her away from Yato, whose unreliable and violent behavior clashed with her own values. Under Tenjin, she finds a more stable and respectable master, and she carries out her duties with diligence and loyalty.

In the story, Mayu appears as a supporting character who interacts with other shinki and gods, particularly during events involving Tenjin or Yato. She serves as a contrast to Yato's chaotic, wandering lifestyle and underscores the different paths a shinki can take depending on their master. Her relationship with Yato remains marked by tension and a degree of embarrassment on her part, though she also shows moments of grudging respect as the series progresses. She does not undergo a major transformation over the course of the narrative, but her decision to leave Yato and serve Tenjin represents a significant personal choice that defines her role. As a shinki, Mayu has the ability to transform into a weapon when her god calls her true name, though her specific weapon form is not prominently highlighted in the main story. She also possesses the typical shinki vulnerability: if her name is stained by impure acts or thoughts, she can become corrupted or harmful to her master.