Duelist Pack: Kastle Siblings is a Duelist Pack in the Yu-Gi-Oh! Official Card Game (OCG). It is the fifteenth set in the OCG's Duelist Pack series, following Duelist Pack: Yuma 2: Gogogo & Dododo.
The set features a lot of the latest cards from the Yu-Gi-Oh! ZEXAL anime used by Ryoga Kamishiro and Rio Kamishiro.
Each pack of Duelist Pack: Kamishiro Siblings contains 5 cards and each box contains 15 packs. There are 30 cards in total. The number of card of each rarity are as follows: