Mushoku Tensei: Roxy Gets Serious Vol. 10 (manga)

Roxy dreams of mastering Saint-Level magic--truly powerful spells that will earn her the right to graduate from the Ranoa University of Magic. To get the materials she needs, she's teamed up with her free-spirited roommate Lene for a perilous dungeon dive. At first glance, Lene seems boundlessly confident, but her bright exterior conceals hidden flaws and insecurities. And even if Roxy manages to graduate, will the world ever truly accept a demon like her?