Route 402

Route 402 is the route which leads you to the other gyms. It can only be accessed after the Route 402 cutscene.

Cutscenes
See cutscenes.

Pichu
A pichu is found drowning in the water, you save it and bring it ashore. After, it rewards you with a battle which gives you the chance to catch it. After the battle, Diamond introduces himself then he battles you. He leaves after the battle.