Isshun de Chiryou shiteita noni Yakutatazu to Tsuihou sareta Tensai Chiyushi, Yami Healer toshite Tanoshiku Ikiru Episode 8

Life hasn't been kind to Zenos. He was born in the slums, and his dirt-poor background has denied him almost every opportunity. After an encounter with a healer, he throws himself into studying to become one and finally catches a break when an adventurer invites Zenos into his party. Zenos is thrilled—so thrilled, in fact, that he's willing to put up with his teammates treating him like garbage. They fail to appreciate his talents and ultimately kick him to the curb, claiming he's outlived his usefulness to them.