Nasa and Tsukasa take an overnight bus to visit his parents in Nara. They attempt to enjoy the trip like a honeymoon, when Chitose shows up at a service area, asking to know why Tsukasa married Nasa, who happens to overhear the conversation and begins to wonder the same thing. As the couple attempt to enjoy seeing the sights in Kyoto, Chitose appears again. She attempts to test Nasa to see if he's worthy to be married to Tsukasa, and he explains why he decided to marry her.
It was originally formulated to 
express the likelihood of life
تمّ ابتكارها مبدئيّا لحساب إمكانية وجود
Die Formel dient zur Abschätzung
der Wahrscheinlichkeit außerirdischen Lebens.
Sirve para calcular la probabilidad
de vida inteligente fuera de la Tierra.
Sirve para calcular la probabilidad
de vida inteligente fuera de la Tierra.
Elle permet d’estimer le nombre
de civilisations extraterrestres
In origine è stata ideata per esprimere la probabilità
che ci sia vita al di fuori della Terra, nell'universo.
Foi originalmente formulada para
expressar a probabilidade de vida
Изначально её использовали,
чтобы рассчитать количество