Isshun de Chiryou Shiteita no ni Yakutatazu to Tsuihou Sareta Tensai Chiyushi, Yami Healer Toshite Tanoshiku Ikiru

Zenos grew up in poverty in the slums, with limited opportunities due to his low social status. After meeting a healer, he dedicated himself to learning the craft and was eventually accepted into an adventurer's party. Despite being mistreated and undervalued by his teammates, he remained with them until they dismissed him, claiming he was no longer useful. Stripped of resources and options, Zenos opens an underground clinic to support himself. His exceptional healing abilities soon attract attention, with rumors spreading about his remarkable work in the city's hidden corners. The royal palace begins to take notice of his growing reputation. As he struggles to build a future in a society that has consistently rejected him, he also faces the challenge of helping those who come to him for aid.