Tenkuuji Ariko is a Saiyan of unknown descents. He lives in a world where Saiyans simply don't exist, but Dragon Balls does. He begins as a 13 year old, entering a Prestigious school for Magic users. At the entrance exam, he nearly flunked it due to only being 13 and already being looked down upon, but when his "Sister" insisted they try out his power, Tenkuuji displayed enough power to beat even Seniors in battles. What was most puzzling however was that he did not use magic at all in his battles but instead used Ki, and lots of it. This made him a major outlier in the Magic World because using Life Energy like that is thought to be suicide.