Hm. Reading "I've Been Killing Slimes for 300 Years and Maxed Out My Level, vol4" as of late.
It's about an overworked woman who dies and is reincarnated as an immortal witch in a fantasy world; she lazes about and accidentally becomes super strong over the years. It's kind of a Monty Python-esque romp where the world is quite absurd and she's just trying to keep it together in her (immortal) lifelong goal of a relaxing, lazy life.