Is this a zombie? Season 2

An ordinary high school student, Ayumi Aikawa, was involved in a serial murder case that shocked society and died due to inexplicable circumstances, but he unexpectedly came back from the dead. It turns out that Yu, the necromancer who accidentally met Bu before the incident, turned him into a zombie and resurrected him. In addition, Haruna, a girl warrior from the magical world, and Sera, another vampire ninja girl, have even evolved into a situation where they all live together...