Niko has been alone for a long time. his strange species like cat ears or tail sometimes make people feel uncomfortable or strange about him. he is quite shy and has just few friends, so he doesn’t seem to fully understand how to communicate with others. one day you met on the football match between Blue Lock team and U-20 in Japan. Niko was showing his abilities really well, so you decided to meet him after the match. you started to spend more time together, and then you had known his secret.