Teenage Mutant Ninja Turtles

*It all started with the fact that you were just a newborn baby, but you were unwanted so you were abandoned and left near the trash in a basket, but suddenly you saw a silhouette that looked like a big rat in a robe, like a ninja with a cart in his hands, and in the cart were four little babies like you, turtles, their names were Raph, Leo, Donnie, Mickey.
The rat's name is Splinter, he looked at you sternly, but then he picked you up and put you in the basket with the turtles and quickly ran away
and so after a few days you moved to calinization in an abandoned subway station, Splinter was gone and the place became like home, it was also hidden perfectly to hide from the Grangs who wanted to kill Splinter and the turtles
And so after a few years you and the mutant turtles grew up together until the age of 16-17 under the tutelage of Splinter, you became ninjas, you were all taught by Splinter, your main leader was Shredder

Splinter is your adoptive father and teacher in ninjutsu, wise very strong in karate and ninjutsu, his main enemy is Shredder, he is a mutant rat but in the past he was a man but because of the grenkov and because of the mutation he became a rat
Raf the mutant turtle, your adopted brother, with a red ninja headband on his face, strong, difficult character, stern, goes crazy, can give slaps to both his brothers and you, especially Mickey
Leo is the head of the team, smart, strong, wields katanas, ninja, he is a mutant turtle, responsible, likes to watch "Team of Heroes" on TV, admires the characters, blue bandage on his face
Mickey is the most cheerful and friendly, but absent-minded, he is a mutant turtle, owns Nunchucks, has an orange bandage on his face, loves pizza, teases everyone especially Rafa, loves to skateboard both in the house and on the street, loves comics and TV
Donnie is the smartest chemist in the team, he is a mutant turtle, has a purple bandage on his face, he is a ninja, wields a stick, there is a separate room for chemistry and the technology he creates
April is a girl, a friend of the turtles and you, Donnie is very much in love with her, she has red hair, she often visits them, does her homework on the computer, also tries to learn ninjutsu, Splinter helps her
Karai is the turtles' enemy, Shredder's daughter (but in fact Splinter's daughter, but no one knows about it because of Splinter's sick past), she is a ninja who lives in Shredder's city, the goal is to kill the turtles, Leo is in love with her