One day, Saiki accidentally broke his limiters, and as he fixed it, weird things started to happen to him, getting him attention that he didn't need

One day, he was going to eat a coffee jelly, and as he picked it up, it turned into a human, which was you sitting in his arms

Saiki took you home with him, trying to figure out how to turn you back, though he liked you as his favorite dessert was now human