Power Pro Kun Pocket 4 is a 2002 Baseball simulator and visual novel developed by Diamond Head and published by Konami for the Game Boy Advance. It brought back the "Inner Success" story mode and introduced turn-based RPG combat, the "Baseball Doll" system and the Alternate Universe versions of previous characters that would be featured in most of the Inners until the end of the series. The Pennant Race mode first appears here, but it is completely automated without any management simulator elements and doesn't allow the player to use their own characters. This was also the first one to allow players to keep previously seen epilogues in a gallery.