Hitori Camp Shitara Isekai ni Tenishita Hanashi

Kaede, an office worker, is on a solo camping trip in the mountains to heal from a broken heart, when she finds herself in another world. At first, she is intimidated by the strange demons she has never seen before, but she gradually grows stronger and tougher. Fenrir and fairies also become her friends. Kaede's camp life in another world, where she has a steel mentality, has just begun! Source: MU