Kingdom Hearts 358/2 Days is an action role-playing game developed by Square Enix for the Nintendo DS. It is part of the Kingdom Hearts series and focuses on the story of Roxas, a member of the organization known as Organization XIII. The game explores his experiences and relationships during his time in the organization, particularly with Axel and Xion. The gameplay features a mix of real-time combat and role-playing elements, allowing players to customize abilities and weapons. Players complete missions in various Disney-themed worlds, uncovering the narrative that connects to the larger Kingdom Hearts storyline.