Yamada

山田

The female protagonist works part-time at Super S, the supermarket where Sasaki is a regular customer.
In her role as Yamada, she is calm, wholesome, and an ideal customer handler; however, her true self, Tayama, is much edgier, featuring multiple ear piercings and a leather jacket.
She invites Sasaki to the smoking area behind the store, a place he subsequently visits on a regular basis.