Loner Life in Another World (Light Novel) Vol. 9

Haruka meets a group of clerics in the fantastical frontier of Omui. One of the clerics, Arianna, is actually the princess of the Theocracy. She explains the Theocracy's deep corruption, and Haruka resolves to protect her from an upcoming political purge. First, he'll send her party someplace safe--a dungeon?! Thus begins a revolutionary power-leveling training regime: the clerics are bound to get stronger than any pursuing assassins! And when Arianna is concerned about her homeland suffering under the new papal reign, Haruka has a plan in store for that too...