Yuna Konnyaku

Yūna is Mamoru's childhood friend and neighbor. She is a quite clumsy and often ditzy girl. These qualities get her into many troublesome situations. Since she has known Mamoru since kindergarten, Mamoru knows everything about her, except for the object that Yūna looks at every night before bed - a photo of herself and Mamoru which she cherishes. It is hinted that she is in love with Mamoru, but is afraid to admit her love to him. She is shown to be jealous of Mamoru interacting with other girls as seen when she prevented Sawagashi and Tsubaki from holding his hands as they slept at the zoo.