This article is about the song. For other uses, see Kagerou Daze (disambiguation).

Kagerou Daze
Heat Haze Daze
Kagerou Daze - Title.png
Kanji カゲロウデイズ
Rōmaji Kagerō Deizu
English Heat Haze Daze
Song Information
Music and lyrics Jin
Illustrations and Movie Sidu
Characters Hibiya Amamiya
Hiyori Asahina
Sung by Hatsune Miku
Uploaded September 30, 2011
NND Link Niconico Broadcast
YT Link YouTube Broadcast
Album Mekakucity Actors
Mekakucity Days

A song that will overwhelm your eyes.[note 1]

—Jin's Song Introduction

Kagerou Daze (カゲロウデイズ Kagerō Deizu) is the third song of the series.


  • Lyrics / Composition / Arrangement: Jin
  • Mix / Mastering: Gacchan
  • Illustration: Sidu
  • Encoding: Chuuta


The story behind the song revolves around a boy, Hibiya, and a girl, Hiyori. On August 15th, the two of them are spending time together in a park. Hiyori has a cat on her lap, when all of a sudden the cat runs away and the girl tries to get it back. Hibiya witnesses Hiyori running out into the street to retrieve the black cat and getting hit by a truck. The heat apparently mocks him in his daze, and he blacks out. Following, he wakes up on August 14th and goes to meet Hiyori again, where he tells her about his strange dream that took place in the park they were walking in. Hibiya suggests that they go home together, but just as Hiyori steps in front of him, a pole falls from the sky and pierces through her. The heat once again laughs at him. Before he blacks out, he notices Hiyori seeming to be smiling as she dies.
This process repeats for decades, the same two days happening over and over. Finally, Hibiya decides to take action and pushes Hiyori out of the way of the truck, so that he is killed himself, thinking it would stop the loop from repeating. In the end, it shows Hiyori was also caught in the loop. It turns out that she had been trying to save Hibiya from death as well, so the cycle still continues on.

Lyrics & Translation



















Hachi gatsu jū go nichi no gogo
Jū ni jihan kurai no koto
Tenki ga ii

Byōki ni nari sōna
Hodo mabushī hizashi no naka
Suru koto mo naikara kimi to daben tte ita

"Demo mā natsu wa kirai kana"
Neko o nadenagara
Kimi wa futebuteshiku tsubuyaita

Ā, nigedashita neko no
Ato o oikakete
Tobikonde shimatta no wa
Aka ni kawatta shingōki

Batto tōtta torakku ga
Kimi o hikizutte naki sakebu
Chi shibuki no iro, kimi no kaori to
Mazariatte musekaetta

Uso mitaina kagerō ga
"Uso janaizo" tte waratteru
Natsu no mizuiro, kakimawasu yōna
Semi no ne ni subete kuranda

Me o samashita tokei no
Hari ga narihibiku beddo de
Ima wa nan ji?

Hachi gatsu jū yokka no gozen
Jū ni ji sugī kurai o sasu
Yakeni urusai semi no koe oboeteita

Demo sā, sukoshi fushigidana.
Onaji kōen de
Kinō mita yume o omoidashita

"Mō kyō wa kaerō ka"
Michi ni nuketa toki
Mawari no hito wa mina
Ue o miageguchi o aketeita

Rakka shitekita tecchū ga
Kimi o tsuranuite tsukisasaru
Tsunzaku himei to fūrin no oto ga
Kigi no sukima de kara mawari

Waza to rashī kagerō ga
"Yume janaizo" tte waratteru
Kuramu shikai ni kimi no yokogao,
Waratteiru yōna ki ga shita

Nando sekai ga kurande mo
Kagerō ga waratte ubai saru.
Kurikaeshite nan jū nen.
Mō tokku ni ki ga tsuiteitaro.

Konna yoku aru hanashi nara
Ketsumatsu wa kitto hitotsu dake.
Kurikaeshita natsu no hi no mukō.

Batto oshinoke tobikonda,
Shunkan torakku ni buchi ataru
Chi shibuki no iro, kimi no hitomi to
Kishimu karada ni ranhansha shite

Monku arigena kagerō ni
"Zamā miroyo" tte warattara
Jitsu ni yoku aru natsu no hi no koto.
Sonna nani ka ga koko de owatta.

Me o samashita hachi gatsu
Jū yokka no beddo no ue
Shōjo wa tada

"Mata damedattayo" to hitori
Neko o daki kakaeteta

(Unofficial Translation)

On August 15th,
12:30 in the afternoon,
The weather was incredibly nice

And amidst the sickening rays
Of the dazzling sun
I spoke with you, for I had nothing else to do

"Well, y’know, I kind of hate summer",
You boldly murmured
While petting a cat

Ah, you pursued that cat
As it ran away from you
And what jumped out was
The traffic light that changed to a glaring red

Suddenly, a truck came out of nowhere
And struck you as you screamed
Your scent, now mingled
With sprayed blood, choked me

In the haze of lies,
The haze of heat laughed, "This is all real!"
With that, like a cricket’s sound being disturbed,
The light blue of summer darkened away

I woke up upon my bed
To the sound of a ticking clock
What time is it now?

On August 14th,
sometime past 12 in the morning
I recalled the sound of an awfully annoying cricket

But, y’know, it’s a little strange.
Yesterday, in a dream,
I saw us walking in this same exact park

"Why don’t we go home now?"
The second you stepped off the pathway,
Everyone surrounding us
Turned their heads up to the sky and opened their mouths

From the sky, down dropped an iron pole
That pierced your body straight through
The sound of wind-chimes and your ripping screams
Filled the spaces between the park trees

In this unnatural scene,
The shimmering heat laughed, "This is the real thing!"
As my vision blurred away, I glanced at your profile,
And thought I saw you smiling

Countless times have had me black out
In the laughing heat like this
This cycle has repeated for decades
I realized that a long time ago

In this kind of clichéd story, there must only be one ending.
Beyond this repeating summer day, it has to exist.

Suddenly, I pushed you aside and jumped into the street;
At that moment, the truck slammed into me
Your eyes and my twisted body were like
Hazy reflections of the blood that sprayed everywhere

If that praiseful heat haze laughed,
“Serves you right!” again
Then this would be what you’d call a normal summer day.
But all of that ended today.

On August 14th,
A girl awoke upon her bed
And she said,

"I failed this time, too..."
As she cradled a single cat.[1]


  • When the song was first uploaded, it quickly gained views, becoming Jin's most popular song, and in turn the most popular song in the series.
  • It is also Jin's first song to reach Hall of Fame on Niconico.[2]
  • As of November 2019, it has reached over 6,900,000 million views on Niconico and over 11,000,000 million views on YouTube.
  • It also gave the Project its name.
  • Heat Haze is a type of inferior mirage experienced when viewing objects through a layer of heated air.
  • There is another translation of this song, "Kagerou Days"; however, the more common official translation for the song's title is "Kagerou Daze".
  • Wannyanpoo's fan-made MV was so popular, that for a time the extent people were confused with Hiyori's official appearance and Wannyanpoo's fan-made version of her. Wannyanpoo only joined the official producer team after the release of this fan-made video.
  • Incidentally, the never-ending world that Azami created is also known under the name Kagerou Daze.
  • The black cat (in the Novels timeline only) was revealed to be Kano, who used his eye ability to make himself appear as a cat. This is not the same case for Routes that occur outside of the Novels timeline, including the Music timeline. [3]
  • In Wannyanpoo's fan-made MV of the song, the truck says Jin and it features a Headphone Actor and Ene doll at the end of the video.
  • It was voted as the #9 Kagerou Project song in the KagePro Song Popularity Ranking 2019.[4]




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