Soul Eater: The forgoten creator

Kenta Knives, he was the one who made Demon weapons. But the witch named Arachne stole his ideas. Knives still made more even though Arachne only made one. Now Lord Death changes Knives into a kid, so that Knives could understand how Demon weapons and Meisters can get along. But when he meets Maka, he hates her on the bottom of his heart and he will not tell why.