S0E21 : I Can't Confess to Her

Kyosuke meets with Ruri and tells her he loves someone else. The next day, Kyosuke asks Kirino out on a Christmas date to Akihabara like they did a year previously. Kyosuke reveals that he had finally fallen in love with a girl, which upsets Kirino and causes her to run off. Giving chase, Kyosuke quickly looses sight of Kirino when at that moment Kaori, Saori and Ruri show up in a minivan. After spotting Kirino, Kyosuke jumps out of the van and corners her. Not denying his feelings any longer, Kyosuke publicly acknowledges his love for Kirino. Kyosuke then asks her to stay in Japan and marry him. Kirino tearfully accepts.