Isekaijoucho released a new digital single and music video today, the first in a new series of songs under the "parallel universe" banner. The track, titled "Ambivalent" was debuted at a live performance in August when the new series was announced. Composition and lyric duties are being led up by Mao Sasagawa and contrasts Isekaijoucho's cute vocal sound with solemn lyrics on top of a track that switches between moody and playful.