Nasa and Tsukasa's newlywed life has finally begun. The two of them head to a bathhouse run by a girl who went to middle-school with Nasa, Arisugawa Kaname. Kaname is shocked to see Nasa with a girl, and is curious about what happened after learning about the marriage. Meanwhile, Tsukasa heads into the bath and encounters Kaname's sister Aya. When she asks Tsukasa about her connection to Nasa, Tsukasa replies that they are family.
See, this is why everyone calls you 
an egghead with math for brains.
.لهذا السبب ينعتك الجميع بمغفّل ذو عقل رياضيّات
War ja klar. Du bist einfach ein Streber
mit nichts als Mathe in der Birne.
Por eso los cerebritos son unos tarados…
Por eso los cerebritos sois unos lerdos…
Et voilà ! Pas étonnant
qu’on te traite de matheux intello.
Visto, è per questo che ti danno della testa vuota
con la matematica al posto del cervello.
Lá vem. Por isso te chamam de cabeça
de ovo e cérebro de matemática.
Не зря все говорят, что у тебя
в голове одна алгебра.