The Princess' Decision is the 118th episode of the Katekyo Hitman Reborn! anime.
In Gamma's memory, his first meeting with Uni, shortly after Aria's death, is shown. At some point after Uni becomes the boss of the Giglio Nero Famiglia, Genkishi has a failed fight with Superbia Squalo as per a bargain made by the Gesso Famiglia and returns with injuries to the Giglio Nero Famiglia. Uni decides to meet with Byakuran to prevent anymore of her subordinates being hurt. After meeting with him privately, Uni returns emotionless and a loyal servant to Byakuran after he drugged her. Gamma states how Genkishi was the biggest traitor to the Giglio Nero Family and how, because of that, he wants to defeat Byakuran.