Fandom practices are often considered meaningless and unnecessary. However, the use of social media carries the potential for positive as well as negative impact on the users. Using the framework of Community of Practice, the latest theory addressing community formation and interaction, as its theoretical framework, the study explores the Twitter-based online fandom community (called stan twitter) of Korean Pop-Music (K-Pop) as a working Community of Practice (CoP). This community is a hub of non-native English language speakers, who actively communicate on this platform. This qualitative study uses semi-structured interviews and participant observations to collect data, and analyzes it using qualitative coding. The study finds that the members of K-Pop Stan Twitter form interpersonal bonds, communicate regularly, and create a close-knit community where everyone contributes in their own capacity. The study suggests that the platform in question does possess the characteristics to be considered a working CoP, with the addition of another element that makes it unique: power hierarchy among the participants of the community, which is usually the least noticed aspect in research on online platforms. Moreover, it carries implications for inculcation of various positive qualities in the users.