Board Thread:General Discussion/@comment-11469381-20140515010109/@comment-16436805-20140622010326

He did care about Tang Shen, she was the whole reason why the two friends became enemies (women, destroying friendships since ever XD), I believe Saki got insane because he caused her death, and the only way he could live with himself was blaming Splinter and raising the daughter that should've been his. Shredder is a mad man and he DOES care about Karai, she's all that is left of his love Tang Shen, he's trying to convince her that everything he did was because he loves her and loved her mother.

Sure, the sh*t is gonna hit the fan as soon as he   won't forgive him for lying to her all this years, causing an AWESOME season finale.