Nagi Koi-Kura's Links
Being the innocent and pure child she is, Nagi has no knowledge of any ill intent Anzu desires for. All Nagi sees is a very kind academy girl who loves sweets as much as she does.
Nagi isn't meant to go into town alone, but due to the location of Anzu's store compared to Nagi's home, she often detours before or after school to stop by and get candies, sometimes even just say hello to her friend.
Often when Nagi comes into her store to buy candies, Anzu will add a few extra, she doesn't know why exactly; it could either be as a way to keep her coming back with others who'll buy her candies and become targets, or it could be because she likes little Nagi as a friend.