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's likely something that existed before humans 
gained the knowledge that they have now.
.على الأرجح أنّ كائنات وجدت قبل البشر توارثت المعلومات التي يملكونها الآن
Vermutlich gab es das schon,
bevor Menschen ihre Intelligenz entwickelten.
Probablemente exista
desde que el hombre tuvo uso de razón.
D’ailleurs,
c’était sans doute déjà le cas
Probabilmente è qualcosa che esiste da prima che
 gli umani ottenessero le conoscenze che hanno ora.
Provável que ele existisse ainda antes
da humanidade ter o conhecimento de hoje.
Скорей всего, такое существовало ещё до того, 
как люди обрели знания, что есть у нас.