My Patients Are All SSS Fiends

Most players run screaming from SSS-class evil spirits, but Luci carries a medical kit and a payment QR code everywhere. On the cursed death train, he writes medical records for every ferocious fiend, gives injections, talks them through their mental troubles, and never forgets to collect payment. Succubi, weeping blood angels, even the Bloody Princesses all line up for his treatment. Who says fighting evil spirits is the only way to survive? Healing them is the ultimate cheat code.