Rosario and Danmachi mirror each other pretty closely. Both Tsukune and Bell enter a world they are unprepared for filled with danger and monsters. Tsukune and Bell essentially start off their stories being rescued by a powerful girl. Through destiny Tsukune and Bell grow as characters and gain their own abilities that help them cope with their situations and environments better and better. Bell and Tsukune both have a habit of turning many foes to friends. They both suffer disbelief that either belongs where they are by many doubters and those more experienced then they are. Yet both are constantly tossed into situations that force them to change and improve til they are better at dealing with their situations whether they want to or not.