Takao Hiyama

**Takao Hiyama** (火山 高夫, *Hiyama Takao*) is the Third diary owner. Ostensibly the homeroom teacher of Yukiteru Amano and Yuno Gasai,
 Hiyama moonlights as a serial killer, hunting down defenseless women
and killing them with a large knife or machete. He owns the "Murder
Diary".

## Appareance And Personality

Hiyama is a man of about thirty, with long red hair, tied in a little ponytail, and green eyes.

Little of Hiyama's personality is revealed during his short time
in the story, but as a teacher he enjoys dropping surprise english tests
 on his students, and very severe, although sometimes and friendly with
his students, and this was shown in the scene where he allows Yuno to
make her clay model of Muru Muru, though it only may be because of the reason that she claimed it was a brain exercise.

In fact, and a very manipulative man and sadistic, Like when he
told his students to be careful to serial killer, even though the serial
 killer was revealed to be Hiyama himself. Hiyama is also shown to be
very paranoid, as he was known to destroy his Future Diary twice when
Muru Muru first introduced it to him, yet he still believed that she was
 recording his crime on the diary, and again under the belief it is
evidence. Muru Muru also predicted that he would be the first Diary
holder to die due to his paranoid nature and it was shown to be correct.

## Plot Overview

### The Survival Game Saga

Takao Hiyama was a killer at least two years prior to the events of
the Survival Game. He appears in the first episode, warning the students
 in his class, which include Yuno and Yukiteru, to be aware of the
serial killer, even though he was the serial killer himself, evidenced
by the fact that he the same night stalked a woman and later murdered
her.

Muru Muru appeared and presented him his Future Diary, however as
 paranoid as Hiyama was shown to be, it did in fact take three attempts
for him to realize it recorded his future and that Muru Muru was not
recording the crime he committed.

The following day Hiyama went to realize that Yukiteru also was a
 Diary owner himself after he was taken in acing his math test using the
 results shown on his Future Diary. Hiyama also encountered another
Diary owner at the old art university the same day, 9th, Minene Uryu, however Minene fled from him to join forces with Masumi Nishijima to escape him.

Later Hiyama is shown to target Yukiteru and follows him to a building,
unaware that Yuno, the 2nd Diary owner, in fact was helping Yukiteru and
 averting his death. As Hiyama reaches the roof, he is unable to find
both Yukiteru and Yuno, and he quickly pulls out his diary to locate his
 targets. At this point Yuno runs out to distract Hiyama, and as
Yukiteru leaps up from his hiding place, he tosses one of his throwing
darts and shatters Hiyama's diary. Hiyama is quickly erased from
existence, much to the surprise of Yukiteru , and it happens at this
points that the other diary owners concludes Yukiteru to the most
dangerous diary owner, prompting most of them to target him.

### The Final Battle Saga

Hiyama is reborn towards the end of the story when Yuno, Muru Muru,
Yukiteru and Minene jump back in time to the third world, shown to be
murdering a woman. He witnesses the explosions occurring at Sakurami
Elementary School, thus allowing one of his potential victims escape
while he is enthralled with the sight.  He then continues his rampage
only to be tackled by Yomotsu Hirasaka.
 Two years later, he is shown to still be a criminal and on the run from
 the authorities. In the anime, Hiyama is captured by Yomotsu and is
seen in prison; Yomotsu appears to visit him regularly, much to Hiyama's
 annoyance, although he does not seem to bear any sort of grudge.

### Future Diary: Paradox

Hiyama also appears in the spin-off *Future Diary: Paradox*, stabbing Yukiteru after Muru Muru accidentally destroyed the intended timeline by killing Yuno. Aru Akise
 saves Yuki and takes his place in the survival game, Hiyama trying to
kill him but ends up stabbing a fusebox with his machete, electrocuting
himself to death. However, he is resurrected by Muru Muru to restart the
 game, but the events of *Paradox* are erased, leading to his death yet again.

## Other Anime stories

### Dragon Ball FM

#### Hell Gates Saga

Takao makes a cameo appearance in this arc. He is shown escaping Hell with Dragon Ball villains.

## List of Characters killed by Takao Hiyama

* Young women - Hunts them down and then kills them with a large knife or machete.