Choukyoushi wa Mamono ni Kakomarete Ikite ikimasu ~Yuusha Party ni Oite Ikareta kedo, Densetsu no Mamono to Deai Saikyou ni natteta~

Ryu was left behind by his childhood friend's heroic party, who told him that they could not take a trainer with them. He runs a ranch in the village, but spends his days feeling unworthy. One day, he...