Kei Yuuki

Оригінальне ім’я: 結城蛍

Kei is a childhood friend of Sawaki and, like him, a freshman. His parents run a sake brewery (making them customers for the mold starter from Sawaki's parents). ~!It is revealed after a brief disappearance by Kei from the main plot, that Kei is gender dysphoric, and has stronger feelings for Sawaki than initially let on.!~