Aura: Koga Maryuin’s Last War (2013)

Satou Ichirou, formerly known as 'Maryuuin Kouga', once immersed himself in a fantasy of heroic proportions. His peculiar conduct attracted the taunts of his peers, eventually leading him to depart from his school. Upon enrolling in a new institution, he endeavored to blend in as an ordinary student. However, fate intervened when he crossed paths with a girl donning a blue cape as part of her cosplay persona. Identifying herself as "a voyager from distant realms in pursuit of the elusive 'Dragon Terminal'", the girl, Satou Ryouko, initially faced rejection from Ichirou due to her uncanny resemblance to his own past follies. Yet, witnessing her endure mistreatment prompted a change of heart in him. Embracing both Ryouko and his own history, Ichirou embarked on a quest to guide her back to reality, culminating in a climactic showdown as the valiant Maryuuin Kouga.