|Den City High School|
|Anime debut||Episode 1|
The standard uniform are a slate-colored jacket with light blue trim over a white dress shirt with a blue tie. The boys wear black pants and most of them keep their collar unbutton, while the girls wear a black miniskirt.
- Unnamed teacher
- Various classrooms
|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|
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