The Nova Universe.
This was a Third-Grade universe in the First Gate's rankings, meaning that it possessed at least 10 million captured territories, which put it not far from the overall first, which was currently still the Holy Universe.
This was a tip-top universe in the prime of its power, above trillions but below only a hundred at best. Incidentally, this universe had border disputes with the Eternal Universe due to Portia's rampant claiming, which later escalated to war.
Their forces had given the Superpowered Army a great headache in the past, using up more than 70% of their manpower. When these forces were recalled for Dante's reshuffling, this universe even pushed back and reclaimed many lost territories in a short time.