One day, suddenly... a night where the moon shines like never before, a boy meets the otherworldly Serin, a denizen of Chaos, only to die and become the undead. Now immortal, he can no longer exist with humans due to an ancient law... A tale of revelations that begins as he returns to Chaos, the start of a new adventure!

Immortal Regis was published in English by Ablaze in 2-in-1 omnibus format from October 17, 2023 to October 7, 2025.