Aura: Koga Maryuin's Last War (2013)

Plot

Satou Ichirou, once known as 'Maryuuin Kouga,' escaped bullying by changing schools to shed his fantasy hero persona. Striving for normalcy, he encounters Ryouko, a girl in a blue cape who claims to be a researcher from another world seeking the elusive 'Dragon Terminal.' Initially, Ichirou is put off by her quirks, reminiscent of his own embarrassing past. However, witnessing her being bullied compels him to embrace both her and his former identity. Together, they embark on a transformative journey, culminating in Ichirou's acceptance of his past and a climactic showdown as Maryuuin Kouga.