Following the previous "Doushitemo," this work's "Ikenai" also welcomes Goro Kumai as the sound producer and HIRORON as the engineer. The sound, which has undergone two transformations by incorporating Jazz and Old school during live performances, has been reborn into a New Jack Swing style and is finally being released. It's like Pandora's Box and Tamatebako were opened because they were told not to, and it's a song that sings about the psychological phenomenon (Caligula effect) of wanting to do something when told not to, with a catchy hook that sounds like wordplay and stays in your ears. It's a song that makes you want to sing along and dance.