"Drugstore in Another World: The Slow Life of a Cheat Pharmacist" centers on Reiji Kirio, a corporate worker who dies from overwork and is reincarnated into a fantasy world. Blessed with the ability to create potent medicines and elixirs, Reiji opens a small pharmacy in a remote village, aiming to live a peaceful life away from the chaos of his previous existence. His unique skills attract a variety of customers, including adventurers, mythical creatures, and even royalty, all seeking his miraculous remedies.

The narrative unfolds as Reiji navigates his new life, blending his modern pharmaceutical knowledge with the magical elements of the fantasy world. His creations often exceed the capabilities of traditional potions, earning him a reputation as a "cheat" pharmacist. Despite his extraordinary abilities, Reiji remains grounded, prioritizing the well-being of his customers and fostering relationships with the villagers.

Key characters include Mina, a young girl who becomes Reiji’s first customer and later his assistant, and Noela, a wolf-girl who joins the pharmacy after being cured by Reiji’s medicine. Their interactions add warmth and humor to the story, highlighting the bonds formed within the small community. The series also introduces recurring figures such as the adventurer Elaine and the noblewoman Rona, whose lives intertwine with Reiji’s as they seek his expertise.

The plot is episodic, focusing on the daily operations of the pharmacy and the challenges Reiji faces in balancing his desire for a quiet life with the demands of his growing reputation. Themes of healing, compassion, and the value of simplicity are woven throughout, as Reiji’s actions often have far-reaching impacts on the lives of those around him. The fantasy setting provides a backdrop for creative problem-solving, as Reiji’s modern knowledge clashes with and complements the magical world’s traditions.

The series emphasizes a slow-paced, slice-of-life approach, contrasting with typical high-stakes fantasy narratives. It explores the idea of finding contentment in small, meaningful actions, as Reiji’s pharmacy becomes a hub of hope and connection in an otherwise unpredictable world.