Isshun de Chiryou shiteita no ni Yakudatazu to Tsuihousareta Tensai Chiyushi, Yami Healer to shite Tanoshiku Ikiru Cresfall Sennyu-hen

Born a poor man in the slums, Zenos never had opportunities in life, so he decides to forge his own opportunities by teaching himself the curative arts after a chance encounter with a healer. When an adventuring party led by a man named Aston extends him an invitation, Zenos is elatedonly to then be treated like dirt by his teammates. Despite Zenoss diligent efforts to hone his skills to nothing short of perfection, the party deems him useless and kicks him out. Bereft of money and options, Zenos starts an illegal clinic and becomes a shadow healer. Word of his healing genius spreads quickly throughout the citys underbelly, and as his reputation grows among the dregs of society, knowledge of Zenoss esteem reaches the wrong ears.