 Whilst strolling in his illusions, he comes upon Chrome Dokuro, who was on the verge of death, and possesses her, saving her life with illusionary organs.He then makes a bargain with the Vongola to become one of the ring guardians in exchange for Ken and Chikusa's safety.Now sharing an existence with Chrome, Mukuro later helps her defeat Mammon after he emerges in his own form.