During the ruckus as the Kaginoji house, Nasa and Tsukasa pledge their love to each other at a church. After Nasa reports to Kaname that he has finally proposed, she points that he still doesn't have a ring. Although he doesn't take much notice at first, Nasa gradually becomes more self-consciousness about the role of a ring in newlywed life.
Do you get it now? 
Diamonds are too expensive.
.هل فهمت الأمر الآن؟ الألماس باهظ الثمن للغاية
Siehst du jetzt ein,
dass Diamanten ein teurer Spaß sind?
¿Ya entiendes lo caros
que son los diamantes?
¿Ya entiendes
lo caros que son los diamantes?
Tu as saisi l’idée.
Les diamants coûtent cher.
Ora lo capisci? I diamanti sono troppo costosi.
Agora entende que
diamantes são caros, certo?
Теперь понимаешь, что это слишком дорого?