Touya, who unexpectedly perished, finds himself in a potent fantasy realm where angels, humans, and demons coexist. To survive in this world, the Demon King demands he gather magical power in the human realm. Complicating matters, Touya gains access to incubus magic, offering limitless possibilities, and a demon named Noel as his servant. Secretly residing among humans, Touya and his companions navigate their new lives. As they settle in, Noel gradually opens up to Touya, and they spend their days using Incubus magic to rendezvous in dreams. Yet, despite Touya's efforts to amass magic by subduing angels and humans, success eludes him.