I got some Ideas for the team from LunaScamander17
Here, in the land of magic, in the Hog village, lived a very lonely boy, his name was Tom Marvolo Riddle. Our Mahokage, Albus Dumbledore, asked him to go to a school for very special ninjas like him. He was an orphan, sure he'll accept it, a chance to live life? Why not? Little did the Mahokage knew, he was going to train the evil-est ninja of all time, Tom Riddle fled the village and changed his name to Lord Voldemort.
He was feared by everyone, he attacked a family, the Potters. However, a baby, managed to survive, his name was Harry Potter. He attended the same school as Voldemort, he was sorted to team 3. With Ron Weasley, Hermione Granger, and their sensei, Sirius Black.
They trained together with the other teams,
Team 2: Oliver Wood, Ginny Weasley, Lee Jordan, Remus Lupin (sensei)
Team 4: Fred and George Weasley, Natasha Carol (LunaScamander17), Alastor Moody (sensei )
Team 7: Luna Lovegood, Neville Longbottom, Seamus Finigan, and Sybil Trelawney (sensei)
Team 9: Padma patil, Dean thomas, Michael Corner, Gilderoy Lockhart (sensei)
Team 12: Draco Malfoy, Blaise Zabini, Pansy Parkinson, and Severus Snape (sensei)
Team 13: Cho Chang, Cedric Diggory, Cormac Mclaggen, Rachell Dark (sensei, that's me)
Team 14: Gregory Goyle, Vincent Crabbe, Flora Carrow, Dolores Umbridge(sensei)
And so on, they soon became chunnins, the chunnin exams were hard, but they made it. Harry was said to be the chosen one, the one to kill Voldemort. So they continued their days as ninjas, harry and his team got a mission a mission to hunt a bounty...