Katainaka no Ossan, Kensei ni Naru Gaiden - Ryuu Souken no Kiseki

Surena Lysrandra has finished her tutelage in Beryl Gardinant's remote countryside dojo and strikes out on her own, working as an adventurer. Indeed, she soon rockets up the ranks, angling toward the pinnacle of the guild: Blank Rank, something only a select few across the entire world have ever achieved. In the midst of her meteoric rise, she receives a request from Logan, an aged adventurer who was once a force to be reckoned with in his prime. That request leads her to meet Nell, a young girl with adventurer aspirations of her own. Little does Surena know that this encounter will see her reach new heights. This is the tale of a journey to the very top, tracing the paths of a young girl and an adventurer chasing the example her master left for her. *Source: Manga UP! Global*