According to Tsubaki herself, she had been on the brink of death due to her illness, and Kyubey's contract allowed her to survive – but at the expense of her lifespan. This nuance sets Tsubaki apart from other magical girls in the series, who often make contracts for more selfless or superficial reasons. Tsubaki's motivations, while initially driven by a desire to survive, eventually evolve into a complex web of emotions and actions.

For the purpose of this article, we are focusing on , the historic Shinto shrine that serves as the spiritual anchor of Sannomiya.