The Healer's Compassion [Demon Slayer]

Hello, everyone. My name is Yakushi Yakumo. I'm a kind-hearted and beautiful pharmacist. Because the modern era's soaring death rate had overwhelmed the underworld with work, after slacking off for a thousand years, my boss kicked me down to the human world to save lives and lower the death rate. And so I became a traveling pharmacist, with a side job as a demon slayer (not really). Later, I realized the big boss on the opposing side, that piece-of-trash Boss, looked an awful lot like the beautiful, sickly patient who repaid my kindness with treachery, was heartless and ungrateful, and got me killed a thousand years ago. Damn it, make way! A doctor's compassion is boundless. I'll only take his pulse, I absolutely won't feed him a deluxe gift pack of Wisteria! [Please follow my new novel, Could You Give Me a Bit of Milk? [Full-Dive VR]!] Tips: 1. A crossover of anime and manga, mainly Demon Slayer. Demons are written in the style of yokai and ghost stories (Blood Demon Art sure comes in handy). The main story is told in third person. 2. The male lead is the doctor who was set up and killed back then (poor male lead, so tragic). 3. No CP (confirmed, ignore the relevant author notes). 4. I won't abandon it. No chapters written in advance, and updates are irregular. Theme: Saving lives and lowering the world's death rate