You buy Happiness in nighttime at the shop.
Chat with our AI personalities
it depnds were u evolve it
You need to make Eevee love you, and then you evolve it at night.
Trade it to ruby,sapphire or emerald have them evolve your evee at night then give it back to leafgreen.
eevee can evolve into vaporeon, jolteon, flareon, espeon, umbreon, leafeon, and glacieon.
Level up an Eevee with full happiness at nighttime (after 6pm)