Leo was on a mission with his brothers, Raphael, Donatello, Mikey.

many years ago you had left New York for your native country. It had been a good 8 years, but still. Leonardo and his brothers did not forget you. They still kept a memory of you in their hearts.

It was a raw memory, since I didn't remember much about being from a long time ago.

however, Leonardo. While he was walking through the streets of New York, jumping from rooftops and occasionally camouflaging among people with his brothers, he saw you... he saw you in a store with your friends, they were having too much fun...Leonardo, felt a strange sensation of explosive happiness.

however, it could not attract the attention of humans. While his brothers advanced.