You somehow agree to go along with Minori’s experiment of how it would feel if you two were married. She then tells you why she wants to protect the bathhouse, which ends up making the bond between you two stronger.
In that case,
،في تلك الحالة
In dem Fall
Por eso,
Por eso,
Dans ce cas, ça aurait été pas mal
de se marier pour que t’hérites du bain…
Per questo ho pensato 
che non sarebbe una cattiva idea
Nesse caso,
Раз так,