Chaos Head girls are back to have some fun in the summer. In this game, Nishijou Takumi gets pulled into his own dream world. To escape, he has to kill the Seirai Orgel. However, this is a world where Shibuya still exists and the girls are all here enjoying the summer, do you really want to escape this place that seems more like a paradise than a nightmare? All six girls in the Romaniacs team want to get closer to you. During this mellow mellow state, you are allowed to do a lot of things the girls will never let you do in normal circumstances. Will you kill the Seirai Orgel to escape or will you stay in this dream world with the girls?