In order to prove to Yuri that they are actually a married couple, Loid and Yor are supposed to kiss. Loid is willing to get this done immediately for the sake of Operation Strix, but Yor can't do this sober, so she ends up downing a bunch of wine and gets drunk.  Yuri sees his sister this way, also gets drunk, and is unable to make rational decisions anymore...
we didn't even do anything to celebrate 
our one-year wedding anniversary.
لم نقم بأيّ شيء حتّى الآن للاحتفال 
.بذكرى زواجنا السّنويّة الأولى
Wir haben ja gar nichts
zum 1. Hochzeitstag gemacht.
No hicimos nada
por nuestro aniversario de boda.
No hemos hecho nada
por nuestro aniversario de boda.
nous n’avons pas fêté
notre anniversaire de mariage.
Non abbiamo organizzato nulla per festeggiare 
il nostro primo anniversario di matrimonio.
nem fizemos nada para comemorar o
primeiro aniversário de casamento.
Мы же никак не отметили
недельную годовщину свадьбы.