As the strongest exorcist, a boy chosen by God was engaged in mortal combat with the Demon Kings. Although he bears the fate of humanity on his shoulders, he actually wants to make sweets peacefully. One day, he meets a girl... This is a story of love and hope growing in the midst of a holy war.

神に選ばれし少年は、最強のエクソシストとして魔王たちと死闘を繰り広げていた。人類の命運を背負いつつも本当は静かにお菓子作りをしていたい、そんな彼に訪れた一人の少女との出会い…。これは壮絶な聖戦の中で芽吹いた、恋と希望の物語。