How to Unlock the Request
To unlock this request, you will need to have already completed Request 48: The Taste of Home.
After that, speak to Floaro again in Jubilife Village. You can find him across the bridge from the Galaxy Headquarters, on the fourth house down on the right if you’re walking through the widest street in Jubilife.
How to Find Floaro’s Eevee
Floaro will want you to give Umbreon a Jubilife Muffin to prove it’s his, so you’ll have to craft one. For this, you’ll need 2x Hearty Grains , 2x Hopo Berry , 2x Razz Berry , and 1x Cake-Lure Base .
Where to Find Hopo Berries and Razz Berries in Arceus
All types of berries grow on trees. Hopo Berries are yellow berries found on blue trees in Crimson Mirelands. You can find a blue tree with Hopo Berries near the lakes in the Golden Lowlands.
Where to Find Heary Grains in Arceus
Hearty Grains can be found in the Golden Lowlands, found south of the first camp in Crimson Mirelands. Look out for patches of tall, golden wheat and you’ll find some small bunches of Heart Grains nearby.
Where to Find a Cake-Lure Base in Arceus
This can be bought from the General Store or Base Camp for 100.
Feeding the Jubilife Muffin to Umbreon will prove to Floaro the Pokémon is his and he’ll reward you with a Rare Candy and your choice of stone: Thunder, Fire, or Water.