Is It Wrong to Try to Pick Up Girls in a Dungeon? on the Side: Sword Oratoria, Vol. 23 (Manga)

"The black minotaur Asterios appears before Bell, challenging him to a long-awaited duel! While Bell's not one to fight if he can avoid it, he can't help getting excited at the thought of going up against such a powerful opponent wnspeople rally around Bell as he battles, and the adventurers in the area, including Aiz, look on in awe. Meanwhile, Finn and the rest of Loki Familia begin to put their plan to destroy the Evils into action..."--