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.
But this lime udon only looks similar. 
It's completely different otherwise.
.أودون الليم هذا يبدو مشابها له، لكنه مختلف كليّا
Aber Limetten-Udon ist trotz
der Ähnlichkeit was ganz anderes.
Pero aunque se vea igual,
el udon de limón es totalmente distinto.
Pero aunque parezca igual,
el udon de lima es muy distinto.
Celles au citron vert
leur ressemblent,
Ma questi udon al lime gli assomigliano solo nell'aspetto.
Sono completamente diversi.
Esse udon com lima é parecido,
mas é algo completamente diferente.
Хоть лаймовый удон и похож на неё,
но на деле совсем другой.