Neinheart Von Rubistein is Cygnus's adviser. Neinheart stands beside the Divine Bird Shinsoo and Empress Cygnus. Neinheart is the main strategist of Ereve, as he is the one who directs the Cygnus Knights to their quests and certain locations to gather certain information about the Black Mage.
In the future (or rather, the one perceived in the nightmare caused by the Black Mage), when Cygnus searches for the World Tree, Neinheart suggests not to chase after the Transcendent. Cygnus did not take Neinheart's word, and soon fell into the trap that corrupted her and the Cygnus Knights. In the future, Neinheart is the only human on Ereve who did not fall into the Black Mage's World Tree trap in the future, believing that the Cygnus Knights should not take what is not theirs and thus, he was not corrupted but instead, hiding from the heartless Knights.
Through dialog in Cygnus Knights quest, Neinheart is revealed to be the older brother of Lilin.
Maple on the Scene (parody of VJ's on the Scene) - Full Moon Goblin Night Market / Nineheart (Empress Cygnus' adviser): If you give Goblin Coins to Kkaebi (Gobiln Merchant), he'll randomly level you up. Totally profitable!
Hanging with Neinheart Chair is modeled after Neinheart.
During 2008~2009 of KMS, the game shared a lot of similarity with Oops! My Prince, which is released at 2008.
Neinheart's character is heavily based on Astor Basa Jehichant. They have silver-blue hair. Coincidentally, Astor's Korean name, 아스터 (Astor, Aseuteo) and 아스터 (Aster, Aseuteo), which was old world (server) of KMS (now Luna) have the same name in Korean.