koto-ni-naru-seto-no-hanayome-ch04.png

Translation

• Context: an over-protective father has a sudden and suspicious change of heart regarding his daughter's relationship with the male main character, who narrates:
• {kyou ichinichi ore-tachi wa mujintou de asobu} koto ni natta!
  今日一日　俺達は無人島で遊ぶ事になった！
  Things ended up so that {today, for the whole day, we will have fun on a deserted island}.
• za za za zaaa
  ザザザザァァ
  *sound of water splashing under the boat*
  (onomatopoeia.)
• demo {hontou ni} igai janee
  でも本当に以外じゃねー
  But it's {really} unexpected, isn't it?
• {watashi-ra no kekkon ni mouhantai datta} ano otouchan ga...
  私らの結婚に猛反対だったあのお父ちゃんが･･･
  That father [who] {was vehemently against our marriage}...
  • ano otouchan - literally "that father," in this sentence, means "my father," but in respect to how he was in the past, at "that" time.
• futari de mujintou de asonde-koi nante nee~~~!
  二人で無人島で遊んで来いなんてねェ～～～！
  [told us] "go play only you two alone on a deserted island," huh~~~!
  • The first de で particle here limits number: futari de, "only two people," "only us two," "us two alone."
  • The second de で particle marks the location: mujintou de, "on a deserted island."
  • asonde-koi - imperative form (meireikei 命令形) of asonde-kuru 遊んで来る, "to go play [there] and come back [here]."
  • The father told them go to have fun on a deserted island, thus "things became such that" they'll go have fun on a deserted island.