This paper examines the rise of anti-Korean sentiment in contemporary Taiwan particularly at the turn of the 2010s. It moves beyond conceptualizing emotion as psychological status to conceive anti-Korean sentiment as a cultural text that debunks the complexity of emotion as an active agent of collective (un)consciousness. Specifically, the paper considers anti-Korean sentiment in Taiwan as an affective space where young Taiwanese demonstrate their active engagement in (re)locating Taiwan in the global imaginative map and their struggle for national identity in the midst of increasing geopolitical tensions in East Asia. Instead of seeing anti-Korean sentiment from an international relations perspective, this paper studies anti-Korean sentiment from a bottom-up perspective through in-depth interviews with young Taiwanese who are actively engaging with anti-Korean discussions and explore various ways that anti-Korean sentiment mediates and transforms imaginative relations between Taiwan and Korea and beyond.