Korean developer JoyImpact's answer to Realm vs Realm-focused games like WAR, Aika is an upcoming free to play 3D fantasy MMORPG. The focus of the game is in its massive realm combat, but there are other notable features as well. Your character starts out as a child, and through training and experience, grows up into an adult over time with certain skills.
There will be six classes, with some determined by gender. Nation battles plan to support 1,000 players on each of the two sides in massive siege combat. Aside from RvR PvP, there are quests, a crafting system, and more.
Eventually, the possibility comes to raise what are being called "Daughters". The Daughter system is a pet mechanic where the pets come in the form of little girls. Like your player characters, these Daughters will grow up with training, and each one promises to be unique depending on various factors, including how close you are with her. They will converse with you and this, among other outcomes, will impact the effects your pet will bestow upon you. The Daughter will also learn new skills as she grows that can aid you in battle.
Aika also promises its sweeping graphics and battle system will all come in a small 300MB download. The game is set for a free to play model, with the usual item shop.
Official website --> http://aika.gpotato.com/