What set the Robins of Schiller's universe apart from those of other universes, aside from having Bruce rather than Batman, was that in terms of power, they possessed a skill no other universe's Robins had: magic.
Because the magical world in Schiller's universe had gone through a Great Disaster and was still rebuilding from the ruins, the visionary figures of the magical world—or, more precisely, the Great Disaster itself—had opened up an inner world in Gotham and established a magic academy there.
Several years later, Gotham's inner world had been built up quite impressively. In addition to the magic academy, four major ecosystems had been created: the swamp ecosystem belonging to The Green; the Heaven ecosystem Bruce used to study matters related to Heaven; the Hell ecosystem established to connect with Beelzebub and Azazel; and the dark ecosystem used to store Barbatos's energy.
The Gotham of the inner world was a projection of Gotham in the real world, so it possessed all the real world's buildings. Combined with the landscapes shaped by the energies lingering within those ecosystems, it was fantastical yet eerie—more like Gotham than Gotham itself was now.
Countless plants coexisted with the buildings in the swamp ecosystem, forming a steel forest woven from green and gray. Every building and road in the Heaven ecosystem glowed, while sacred hymns echoed through the drifting clouds.
The Hell ecosystem retained the savage style of most regions of Hell. Its tallest office building had been transformed into the demon kings' palace. The perfectly respectable international office building had sprouted countless obsidian spikes, while its interior had been redecorated in the retro style favored by demon kings. Meanwhile, the dark ecosystem used to store Barbatos's energy looked exactly like a haunted district from a ghost movie. Dense dark energy filled every corner,