By surrendering divine guardianship, a fresh epoch emerged, granting humanity's survivors the chance to rebuild. The gods, once omnipotent guardians, withdrew their shield, leaving humanity to face the void alone. After fulfilling duties to Taisha, members of Sanshu Middle School's Hero Club now enjoy ordinary student life. Yet this freedom came only after sacrifice.
In Divine Era year 298, Mebuki Kusunoki is among candidates for the next hero title. Though she strives to outshine rivals, she loses to Karin Miyoshi, igniting Mebuki's fury toward Taisha. Her heart burns with resentment; her resolve hardens by Taisha's perceived injustice. Two years later she commands the Sentinels, tasked with charting unknown lands beyond the barrier. Their mission is derailed by unforeseen dangers, threatening crew safety.
To prove her heroism, Mebuki vows to bring everyone back alive, even if confronting the abyss itself. Every member of the fleet relies on her leadership. Her determination inspires hope.
