This study aims to examine the creation process of a myth in the fictional community of B-Mor in Chang-rae Lee`s On Such a Full Sea by delving into the novel`s narrative structure and voice presented in the first person plural form, “we.” In pursuit of this examination, this study discusses the textual complexities and effects of the first person plural perspective to which the narrator`s unique influence on readers` interpretations of the text is attributed. This discussion also brings up the issue of the narrator`s unreliability and the reflection on rumors or words-of-mouth which proliferate in B-Mor, whose residents ceaselessly combine pieces of unverified information. This in turn creates the myth about Fan, a female fish-tank diver who leaves her home in the B-Mor settlement. These arguments converge upon how a myth about an individual is created and reiterated to the point that it becomes a completely “true” story with a narrative created by a community. This study intends to consider the formation and subsequent birth of the myth of Fan.