Monster Hunter Stories 2: Wings of Ruin
Player Bonus: Navirou Costume
If you have save data for Monster Hunter Stories 2: Wings of Ruin, you can get the Navirou Costume layered armor for your Palico in Monster Hunter Rise: Sunbreak!
Make sure to use it in combination with the Rider Series hunter layered armor, and the Tsukino Costume Collab Quest reward that you earned in Monster Hunter Rise!