"Today will be my final day in this dull world." Our delusional main character wants to die to escape reality! Aoki Kaito, a young Japanese student and also the self-proclaimed number one fan of his favorite anime, "Bane of Tartaros" suddenly started to question his existence and reality itself. Things start to go wild as he, alongside the school idol, Ueno Sana, are sent to the very same world of "Bane of Tartaros"!  Now, our delusional main character wants to become that world's greatest adventurer ever! Will things go smoothly for him?