Getting the real Agito is easiest as a Whitill under the Ultimate difficulty setting. Go to the Caves and look for Ob Lilies (Ultimate Poison Lilies). Sometimes you will find a Mil Lily, which is the equivalent of a Nar Lily. To find one easier, find a room with a lot of Lilies and look for a blue one. Be careful, as the new Lilies spit Megid and will make you return to Pioneer 2, killing your chances of finding the sword. Zigzagging or bringing Scape Dolls helps if you cannot dodge the instant death attacks. After killing a few Mil Lilies, you should find a Special Weapon. If you are a Whitill, it is probably the Agito. Play the mission "Seek My Master", and show the Agito to the Tekker standing next to the bank. If it is the real deal, you will get an Orotiagito, which can be almost twice as powerful as the regular Agito.