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...
SHOW OFF HOW IN LOVE YOU ARE
المهمّة:9   أظهرا كم تحبّان بعضكما

Die Turteltäubchen-Tarnung
MISIÓN 9: Demostraremos que estamos acaramelados
MISIÓN 9: Demostraremos que estamos acaramelados
PROUVER QUE L’ON EST FOUS AMOUREUX
OSTENTARE IL PROPRIO AMORE
9ª MISSÃO Ostente o seu amor
МИССИЯ:9 «Покажите свою любовь!»