Touma parts ways with Stiyl and returns home with Index. However, he now has to think of a way to keep Index from following him to Misawa Cram School. Fortunately, he did get away after leaving Index preoccupied by her new pet cat Sphynx. After meeting Stiyl once more, they head to Misawa Cram School as they talk about their enemy, the alchemist named Aureolus Izzard, and his aim to be immortal by acquiring a vampire by using Deep Blood.