This review may contain some spoilers.

One day a mysterious virus appeared on the Earth and killed almost everyone. Only under the 13 years old children could survive, but then the vampires appeared and they made every children their livestock.

Story: 9/10

This story follows Hyakuya Yuuichirou life after he successfully escaped from the vampires and he was taken to the human's city where he realized that the vampires were lying to him. He joined the Japanese Imperial Demon Army to become strong for his revenge which is to kill every vampire who killed his family.

Art: 9/10

Yamamoto Yamato did a really good job with the art. We can clearly see the character acts and it has also very good quality. There nothing else to say, it's just good.

Charachters: 9/10

Yuuichirou: He doesn't have friends because he is afraid that if he ever gets close to someone again he will feel pain again. After he finds some friend he always tries to act who don't care them but in the end he always helps with their problems. It is said that he is an idiot by many of his fellows but they all respect his strength.

Mikaela: He is Yuu's family.He is very smart and he was the one who planned their escape from the vampires but everyone died expect for himself and Yuu. Although Yuu thinks that Mika died he was actually turned into a vampire against his will.

Guren: He is the man who found Yuu after escaping from the vampire city.
His fellows said that he always been childish.
He is lazy, he all the time try to ignore his duties with a reason like sleeping.
In my opinion his personality is similar to Yuu.
Although he sometimes act childish he is a really strong demon soldier, maybe the strongest and when it comes to fight he becomes very serious and he would do anything for his squad.

Shinoa: She was appointed as his supervisor when she first met Yuu during his punishment. She has a sarcastic attitude and she not really shows his emotions. She likes to tease everybody even if it's her superior. Later she will be the leader of Yuu's squad.

Mitsuba: She is also member of the Shinoa squad. She dislikes those who break the formation and commit to individual action because in the past because of her she lost a fellow. She is very talkative and also likes to tease others with Shinoa.

Kimizuki. He is member of the Shinoa squad. He joined the army beacuse of her sister's condition. He always compete with Yuu and he has a strong personality. He is very good in the school and he is good cook. He is also very serious and he loves giving orders to the others.

Yoichi: The last member of the Shinoa squad. He says that he joined the Army because he wanted to avenge his sister. He is described as a coward by the others but it's later found out that he is very talented at the demon weapons.

Enjoyment: 9/10

I really enjoyed it and i am looking forward for the next chapters. It has a lot of actions and a lot of feelings too. It's draw attention for the family and shows us how important it actually is.

Overall: 9/10

It is a really good manga and if you have some free time just watch it you will not regret it. You will have a great time reading this and you will laugh and have all the thrill during the fight waiting for the actions to found out what will happen. ( actually i am not really sure if this sentence makes any sense..:D ) So yeah give it a try and send me your thought about this review.