![](https://cdn.animecharacters.io/images/characters/large/5574-d39c9a9b.jpg)
Kei Yuuki (結城 蛍)
Kei is a male 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).
Voice Actors
Mitsuki Saiga
Japanese
Ju Chang Lee
Korean
Kei is a male 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).
Mitsuki Saiga
Japanese
Ju Chang Lee
Korean