It's natural for children to want to play with their friends.

You were the same once, no?

Reimu, listen closely. You will become the Hakurei Shrine Maiden, and your job is to one day protect Gensokyo.

The Hakurei Shrine Maiden has to protect the borders of Gensokyo on her own, so you won't have any more time to play around. Do you understand, Reimu?