Yama, Kaimashita: Isekai Kurashi mo Warukunai

A 27-year-old woman named Satsuki Mochizuki, after being dumped by her boyfriend, finds comfort in solo camping. She eventually purchases a mountain, only to discover it is a fantasy world. She seeks to move beyond living in a tent and intends to build a peaceful, slow-paced life in this new environment, focusing on tranquility rather than romantic relationships.