The Bucking Horse and the Shark is the fiffth Katekyo Hitman Reborn! Drama CD that was released on March 19th, 2008. The story depicts Superbia Squalo and Dino's youth at the school for mafia children.
Dino talks to Superbia Squalo during Squalo's hospitalization after he lost to Yamamoto in the Rain Ring Battle. Squalo complains that Dino should have just let him die instead of rescuing him. Dino disagrees and reminisces about their first meeting at a school for children of the Mafia when they were teenagers. There is also a flashback of Dino and Squalo encountering each other again as adults, after a Vongola meeting with Timoteo. Back in the present, Squalo falls alseep and Dino tells him not to squander his life.