Mohen is [Ademi](https://anilist.co/character/314077) father and the chief of the town guards

A heroic and mighty adventurer dreams of...opening a pharmacy? 
 
Red was once a part of the Hero’s party, a group destined to save the world by fighting the Raging Demon Lord. But after being betrayed by his comrade, Red hopes to start anew by opening a small apothecary in a sleepy town on the frontier. While keeping his past life a secret is the goal, it won’t be easy...especially when a beautiful adventurer from his past asks to move in. 
 
(Source: Funimation)

A heroic and mighty adventurer dreams of...opening a pharmacy? 
 
Red was once a member of the Hero's party, a powerful group destined to save the world from the evil forces of Taraxon, the Raging Demon Lord. That is, until one of his comrades kicked him out. Hoping to live the easy life on the frontier, Red's new goal is to open an apothecary. However, keeping the secret of his former life may not be as simple as he thinks. Especially when the beautiful Rit, an adventurer from his past, shows up and asks to move in with him!
 
(Source: Yen Press)