Hmm don't really know anime-styled MMORPGs similar to them. Fiesta is the best one. How can you have problems finding friends in them? In Kingdom Quests you get to learn so many new people. After finishing a KQ just talk with them a little to make friends. :-)
Rappelz - Is quite similar to Flyff just with more realistic graphics.
Allods - Very well polished MMORPG with traditional gameplay. Faction based.
Aion - Same as above.
Lord of the Rings Online - Less PVP driven than the ones above.