Pocket Monsters (Poketto Monsutaa), vol. 1

ポケットモンスター
From: http://en.wikipedia.org/wiki/Pok%C3%A9mon

In most incarnations of the fictional Pokémon universe, a Trainer that encounters a wild Pokémon is able to capture that Pokémon by throwing a specially designed, mass-producible tool called a Poké Ball at it. If the Pokémon is unable to escape the confines of the Poké Ball, that Pokémon is officially considered under the ownership of that Trainer. Afterward, it will obey whatever commands its new master issues to it from that point onward, unless the Trainer demonstrates enough of a lack of experience that the Pokémon would rather act on its own accord. Trainers can send out any of their Pokémon to wage non-lethal battles against other Pokémon; if the opposing Pokémon is wild, the Trainer can capture that Pokémon with a Poké Ball, increasing his or her collection of creatures. Pokémon already owned by other Trainers cannot be captured, except under special circumstances in certain games. If a Pokémon fully defeats an opponent in battle so that the opponent is knocked out (i.e., "faints"), the winning Pokémon gains experience and may level up. When leveling up, the Pokémon's statistics ("stats") of battling aptitude increase, such as Attack and Speed. From time to time the Pokémon may also learn new moves, which are techniques used in battle. In addition, many species of Pokémon possess the ability to undergo a form of metamorphosis and transform into a similar but stronger species of Pokémon, a process called evolution.

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