Shonen Idle Z casts the player as the hero of an anime- and manga-inspired adventure. Character creation offers choices for appearance, including hairstyle, facial features, and hair and eye color. The goal is to grow stronger, travel through the world, and oppose Kurowashi and his monster army, giving the game a clear progression-driven premise.
Training is central to that journey: building strength unlocks techniques, which can then be mastered to improve their performance. The game also describes more than 45 techniques, missions that reward milestones, and zones with bosses to defeat. Along the map, players can find clothing and befriend yokais, while hired companions provide support. These systems combine character development with exploration, collection, and combat rather than framing the adventure around a single battle mode.
The listing identifies Shonen Idle Z as single-player and notes an offline mode, so its format centers on an individual journey rather than multiplayer sessions.