when Leo was on the roof that he and karai met on he couldn't stop thinking about her but he was interrupted when he heard a hiss so he looked back and saw karai in her snake form and she asked "what am i to beautiful for you that you lost the words." and Leo blushed while he said "i thought that i wasn't going to see you again." and looked down then karai used her "hands" to lift his head and said to him "i will never leave you." and Leo kissed her on the lips and she kissed back and when they broke Leo say to her "close your eyes." then she did and when he told her to open her eyes she saw him on one knee with a wedding ring and he asked her "karai will you marry me?" "YES!" she yelled and he put it on her fang and they kissed again and Leo asked "come on master splinter will be happy for us."
the sewers
when leo and karai got back to the lair holding hands and when everyone saw them holding hands they flip out "LEO WHAT ARE YOU THINKING SHE IS THE ENEMY!" raph said "i know but she is my fiancee !" leo said and everyone looked at him like have he lost his mind and when April Donnie's girlfriend looked at the ring on karai's fang and she ran over and hugged her and was smiling and Donnie hugged leo and said "be good and don't get her angry okay?" "okay." leo said and before anyone else could say anything "WHAT IS WITH THE YELL-" before splinter could finish his sentence he saw karai and was smiling till he saw the ring and asked "your engage?" "yes." "who asked you?" "i did sensei." leo said and splinter waked to his "son" and daughter and said "you know that it is a very big responsibility okay?" "okay." they said then everyone heard yelling coming from the sewers and they followed it to rahzar, fish-face,rocksteady , bebop, and their old enemies which they fought 2 months ago and leo went to rahzar and asked "any new location on the kraang or anything else?" "no but we did find the mutanimals and new mutants." "okay we need their help if the kraang happens to find us but have your foot-bots find anything that can be used as a base?" "yes a house in a forest and we need a underground base." "okay maybe with the mutanimals help we might have a chance." leo said and then they saw portals opening and the kraang came out of them "everyone we must get out of here now!" leo shouted and everyone went to the vehicles and picked up the mutanimals and head to the O'Neill's house and when they got their they began to train and when they were done with the training and went back to the city and they fought the kraang and defeated the kraang.
1 MONTH AFTER KRAANG DEFEAT
leo and karai were married and they were living in April's old house which was fixed up by April and her dad and they decide to start a family.
9 MONTHS LATER
leo paced back and forward until Donnie came out and said "you have your hands full." and when leo entered he saw two babies one was a boy who had his and karais eyes and his and karai's bodies and the other was a girl who had karai's and his eyes and karai's and Leo's body like her brother and said to his wife "they are beautiful."