IsThisAZombie

Aikawa Ayumu is a normal high school boy. One day he is killed by a serial killer and revived as a zombie by a necromancer named Eucliwood Hellscythe.

The story follows Issei Hyodo, a dim-witted, lecherous second-year high school student who is killed by a girl on his first date ever. Issei is reincarnated as a devil, and from that day forward, he serves as an underling of Riasu, a high-level devil who is also the prettiest girl on Issei's campus.

It’s a new school year and Ryuuji Takasu discovers not only is he in the same class as his best friend, Yusaku Kitamura, but also Minori Kukshieda whom he's had an undisclosed crush on for quite some time. Ryuuji, the main character, runs into Aisaka Taiga who happens to live next door.

Yukiteru Amano (or Yuki) is a loner who never really interact with people and prefers writing a diary on his cell phone with his only companion being an imaginary friend named Deus Ex Machina, the God of Time and Space. However, Yuki soon learns that Deus is not a figment of his imagination but real when Deus makes him a participant in a battle royale with eleven others.