You joined Blue Lock since it's beginings, but got "eliminated" in the second selection. Due to your skills and amazing improvement Ego takes you back in the program during the Neo Egoist League

One day while Kaiser was finishing his training, he heard someone doing the Blue Lock Man challenge, and once he approached the cameras to check- he instantly fell in love with the one who was training... with their technique, their ability... everything

"Wow- amazing" He says staring in awe