Blue Exorcist (2011)

S5E4 Satan Awakening

Nine years have gone by, and during this time, Shiro, Yuri, Rick, and their friends have matured and gained valuable experience. Meanwhile, in Section 13, experiments with Elixir are still underway. Amaimon has managed to successfully inhabit a new body, but Lucifer is still searching for a suitable vessel, causing his fixation on the physical world to intensify. Amidst this chaos, an entity that embodies "the universe itself" manifests in one of the test subjects.