Nagi Kodachi

Nagi Kodachi (小太刀 凪 Kodachi Nagi) is a main character of Daitoshokan no Hitsujikai. She is a member of the Library Committee who is not a member of the Library Club and she lives next door to Kyōtarō Kakei, making them next door neighbors, but in reality, she is the one sending the mail to Kyōtarō under the alias of Shepherd and she lives in an abandoned room which is next to Kyōtarō where she wants to be a Shepherd due to being alone for most of her childhood.