While the relationship officially ends, the "shared secret" mentioned at the close and the after-story titled "A Momentary Chance Encounter" imply they remain together in private.
The 16th episode of the second season of (full title: Ore no Imōto ga Konnani Kawaii Wake ga Nai. ) is the final episode of the series, titled "My Little Sister Can't Be This Cute." . It originally aired as part of a three-episode Original Net Animation (ONA) arc that concluded the story following the regular 13-episode television broadcast. Episode Summary OreImo 2 Episode 16
Kyousuke and Kirino face their childhood friend Manami Tamura , who opposes their romantic relationship. A physical fight breaks out between Kirino and Manami, after which Kyousuke definitively chooses Kirino, ending his lifelong friendship with Manami. While the relationship officially ends, the "shared secret"