|Relationships||Ayumi Sanda (Sister)|
|Physical and Vital Statistics|
|Manga||Volume 8 Chapter 31|
Jun Sanda is Ayumi Sanda's younger brother. He is an elementary student and nicknamed "Big Jun" due to his appearance. He is quite tall for his age and looks like a high schooler and decide's to meet up on the weekend with Erika to discuss a special birthday present for Sanda's birthday. However, Nozomi scare's Kyouya-Kun into thinking that Erika is cheating on him and he tries to follow Erika and assumes that she really is cheating. But in the end, he finds out that she is not and Jun is just big for his age. Kyouya then asks Erika for forgiveness for judging her.