how can I evolve espeon by lvl 15?
how can I evolve espeon by lvl 15?
As Espeon is a friendship based evolution, with just a little time, you can evolve it into Espeon by level 2! I recommend using the Friendship/happiness berries (The EV Reducing Berries) as they are best administered before any EV training.
I would recommend you read the happiness guide here: Pokemon Platinum Happiness Guide