Upon arrival, you visit the Alph Ruins with Arceus in the first party slot. Doing so will result in a man greeting you and showing you to Cynthia, the Sinnoh champion. You're supposed to enter the house with a blue roof and a man will start talking to you the take you to the ritural place. Some people think that the Sinjoh Ruins will be ruins in a new region north of the Johto region.
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