No Record in the Illustrated Book: My Ink Dragon Comes from a Fragment of the Scroll

The Beast Control Illustrated Book contains 1,300 kinds of spiritual beasts, but none of them resonated with him - until his blood dripped into a broken ancient scroll, the ink flowed, and a spiritual beast that did not exist in any records poked its head out of the page. Its lower body turned into flowing ink mist, with a disembodied tail. He rode on its back and jumped out of the second-floor window of the second-hand bookstore. Only in mid-air did he realize: he hadn't learned how to ride it yet.