Cesar waits in the Battle Arena Lobby of the Ariant Coliseum, and the only way in is the Dimensional Mirror's "Ariant Coliseum" row, which the Mirror offers to levels 20 to 30 only, as in Pre-BB MapleStory. Two things were wrong on our side and are fixed: the finder arrow said "Far away" even for a character the Mirror would take there (it now leads to the Mirror), and the Quest Log's map link lit up Lith Harbor, which has nothing to do with it (the World Map now says the lobby is reached through the Dimensional Mirror, with its level range). What is still open: a character above level 30 who holds this quest has no way into the lobby. That one is with Mark to decide, and this report stays open until it is settled.