From Bulbapedia:

(Japanese:まんが版 ポケットモンスター全書), is a shōnen Pokémon manga directly based on the Pokémon games. It follows the plot of Pokémon Red and Blue closer than any other Pokémon manga. Many details not included in other manga or the anime, such as the hunt for Safari Zone Warden's dentures, are covered. It ends with the defeat of the Elite Four.