Mumei Sanryuu Tamer wa Outo no Hazure de Nonbiri Kurasu: Demo, Kokka no Youshoku ni Tsuku Deshi-tachi ga Nazeka Tayottekimasu

Bartz is a humble tamer who never asked for much—just a modest adventurer enjoying a carefree life with his contracted beasts, taking on small, unremarkable quests day by day. One day, while handling yet another routine request, he's visited by Noelie, a young woman who used to be one of the orphans he once looked after. She proudly tells Bartz that, thanks to his teachings, she's achieved great success—and now she's come to ask him to take up an important national position. Though Bartz feels the role is far beyond his abilities, he can't bring himself to turn her down. Determined to do what he can, he decides to accept the challenge. And as a result, his familiars and former students start to shine brilliantly, revealing Bartz's extraordinary gift for nurturing talent! A rise-to-greatness fantasy about an ordinary adventurer whose outstanding disciples and tamed beasts make him a legend!

(Source: AlphaPolis, translated)