|Den City's orphanage|
|Members||Den City orphanage owner|
|Anime debut||Episode 4|
Den City's orphanage is an unnamed location in Den City. Go Onizuka grew up here and uses the money he gains from his job as a Charisma Duelist to help fund the orphanage's continued existence. Some of the rooms inside of the orphanage are equipped with TV screens, play mats, and bookshelves inset into the walls. One of the rooms additionally holds a bear stuffed toy that bears a resemblance to Go's design.
|Den City||Aoi Zaizen's apartment • Café Nagi • Den City High School (Duel Club) • Den City's orphanage • Den hospital • Emma Bessho's apartment • Go Onizuka's warehouse • Kyoko Taki's apartment • Makoto Kimishima's house • Revolver's house • Stardust Road • SOL Technologies • Yusaku Fujiki's house • Zaizen's manor|