E-Side 4 is the fourth English-language EP (eighth overall) by Japanese duo Yoasobi. It was released on April 24, 2026, through Echoes and Sony Music Entertainment Japan. Like the previous E-Side EP series, the nine-track EP contains the duo's songs recorded in English. Six singles preceded the EP: the English versions of "On the Stage", "Monotone", "Undead", "Players", "Watch Me!", and "New Me".
