When tang shen was survived by hamato house has been burned and Oroku Saki died...... hamato yoshi and tang shen is taking their daughter to new york. Yoshi brought 4 baby turtles, then the mutagen falls on hamato yoshi and his family.

Tang shen: oh dear... We became unique beings, hamato yoshi.

Hamato Yoshi: I suppose your absolutely right, tang shen. That's why we are here in the sewers, so we must hide any places from the enemies......

Tang shen: look. Miwa is having her new cousins.

Hamato Yoshi: cousins? Hmm...... hehe... well then, I will name them donatello, michelangelo, Raphael, and leonardo.

Donatello + Raphael + Michelangelo: sensei...

Leonardo: lady tang shen... master yoshi...