This is a work for "FILM_SONG.", a new project of the video director Junki Tachibana. Based on the theme of "a group drama of people taking on challenges," Takashi Ichi wrote the lyrics and arranged the music for this song. The concept of "I-SE-NO-SE" is "a rhythm that pushes the backs of all those who are ready to take the first step." It is a fusion of underground dance music Juke/Footwork and pop music.