Our Last Crusade or the Rise of a New World, Vol. 3 (light novel) — Kei Sazane

Break free…if you canGetting assigned to a special mission to infiltrate the Sovereignty was already more than Iska could handle, but with Captain Mismis becoming a witch, his list of problems just keeps getting longer. To make matters even worse, Iska finds himself dragged to the Sovereignty's prison block after an accident nobody bargained for. There, he's chained to Alice, giving him no chance of escape -- and intimate insight into her true nature. But reality comes crashing down on them hard when the “transcendental” sorcerer manages to break out of his cell…