Tokyo-Ghoul Training School (Old/Outdated)

This a story about a 13 year old teen where the world has changed, have of the population have changed to ghouls (Ghouls are humans who have all different types of tails stronger than steel) and the other half are still humans, the humans invented kagune's from ghouls who have died of age, so they became CCG, the lucky thing is the ghouls don't have to eat human flesh, lucky we made a flesh-like food before we had any deaths, so ghouls and humans live peacefully together, and to school to see compete against each other to show which team is strongest: Ghouls or CCG's