Während die Welt durch das plötzliche Auftauchen eines mysteriösen außerirdischen Mutterschiffs bedroht wird, führen die besten Freunde Koyama Kadode und Nakagawa „Ontan“ Oran ihr Oberschul-Leben weiter. Doch als sie erwachsen werden, stehen sie vor existenziellen Fragen, lernen die Komplexität des Erwachsenseins kennen und erfahren, dass die wahre Bedrohung nicht von oben kommt.

Despite facing the unprecedented situation of having his mind and body swapped with his son, Taizan successfully serves as Prime Minister. Just as he is about to retire from the political world, he is approached again about becoming Prime Minister. Just then, the extraordinary phenomenon of a body swap occurs.

A large spaceship appears over Tokyo three years before the story starts. A one-sided war against the seemingly harmless aliens ensues, sparking controversy and pacifism. Despite this unique and tragic event, high school girls Koyama Kadode and Nakagawa Ouran behave as if nothing has changed. They live their days like they always have. The focus of this story is not the alien invasion, but human nature, dialogue, growing up, and life.

A large spaceship appears over Tokyo three years before the story starts. A one-sided war against the seemingly harmless aliens ensues, sparking controversy and pacifism. Despite this unique and tragic event, high school girls Koyama Kadode and Nakagawa Ouran behave as if nothing has changed. They live their days like they always have. The focus of this story is not the alien invasion, but human nature, dialogue, growing up, and life.

Bookworm Takao falls in love with Nanako, but he cannot express his feelings through words. Instead he secretively acts out in a heat of passion which creates a huge scandal in his school. There is one person who knows his true nature, and this girl will do anything to nurture what this Charles Baudelaire hides.