While he was working as a Dog Trainer for the United Sanctuary's branch chief Yuichirou Kanzaki, he acted under the philosophy of "Weakness is a sin", and thus was a bully towards everyone who was weaker to him. After Kanzaki resigned from being the branch chief, Doujima became benevolent.
He is first shown in Turn 39, where he was sent to pick up Taiyou Asukawa after missing out on training at the United Sanctuary Branch. There, he fought Chrono Shindou where they were defending their own philosophies, with Taiyou's "freedom" on the line. Despite Doujima losing to Chrono, Taiyou decides to leave with Doujima back to the United Sanctuary Branch.
Doujima is then seen in Turn 47. After Kanzaki's defeat and resignation, he is seen participating in Ibuki's reformation of the United Sanctuary branch, talking with his future teammate, Sugiru Kariya.
Doujima returns with the newly founded Team Demise Neo in GC Episode 18: TRY3 vs Asteroid, where he and his team were the runner-ups during the United Sanctuary Branch G Quest, losing to Chrono Shindou and Team TRY3, however, Doujima no longer has a mean disposition.
Doujima and Team Demise Neo return once more, this time as participants of the Under20. They managed to complete the first part of the tournament, the Cray Scramble, and are one of the 50 teams to move on.
|Record (Season 5)|
|Chrono Shindou||Turn 39||Lose|