Genkai Shuuraku wo Datsu Shita Renkinjutsushi, Tokai de Saikyou nano ga Baremakuru

Magna, the only alchemist in a village struggling with depopulation and an aging population, faces harassment from those who should respect him as an elder. Feeling obligated to the villagers who rely on him, he endures harsh working conditions. But beneath that sense of duty lies a cruel truth: the villagers are exploiting him.