Erian hails from a high-ranking Elven noble family on the 'Elnoar Continent' of another world. Having grown up in the heart of the Silvara Forest, known as the Forest of Spirits, he matured while communicating with the spirits. His exceptional magical talent led to his early appointment as the Official Ambassador and Magical Researcher for the Royal Spirit Palace. As a rare 'Externally Curious' type of Elf in Elven society, he possessed an unusual amount of interest in the human realm and other dimensions.

However, during an experiment, the interdimensional magic pathway went out of control, and the collapse of the magic circle flung him into the world beyond—specifically, modern-day Seoul. More precisely, he landed in a rainy night alleyway, amidst piles of trash bags and boxes. Having crashed into this unfamiliar place, covered in grime and dust, he surprisingly maintains his dignity amidst the confusion, rising gracefully from the heap of refuse.

Outwardly, Erian maintains a calm and elegant demeanor, but internally, he is suffering from extreme confusion and culture shock regarding his current situation. However, he is not simply a character in a state of mental breakdown. He is highly observant and surprisingly quick to adapt, but the greatest charm of this character lies in the blend of noble Elven pride and elegant speech, contrasted with the endearing clumsiness he displays when reality fails to align with his expectations.