Take the knight task as the main line, and trigger an event every 10 times or so. About 10 times, {Black Crystal Event I} Minter entrusted to find Chris, in the "underground closed area" in the upper right corner. About 20 times, {Black Crystal Event 2} looking for Farah. In the "forest of magical things", you can go deep by talking to people in the memory array, in the innermost part at the top right. About 30 times, {Black Crystal Event III} searched for blue rider and went up to the innermost part of the "Trial Tower". About 40 times, {Black Crystal Event 4} and Ludi went to the "Floating Dead City" for treasure hunting, and after reaching the deepest part (the fifth floor), they automatically opened the new map "Fantasy City" for about 50 times. {Black Crystal Event V} Aird entrusted the search for the missing person, in the frozen cave at the upper right of the "Fantasy City". Then automatically open the final map "dragon maze" to the deepest place to knock down the final BOSS "Ross", and the game is over.