This song is performed by the eight main characters of Vocaloid which are:
Hatsune Miku as Village Girl, Kagamine Rin as Girl Doll, Kagamine Len as Boy Doll, Megurine Luka as the Master's Daughter, Kaito Shion as The Master, GUMI as the Maid, and Kamui Gakupo as the Butler.
English and Romanji/Original Lyrics:
Fukai fukai mori no oku ni mayoikonda mura no musume
Iroaseta tegami o motte yoru no yakata ni tadoritsuku
In the depths of a thick forest, a village girl has become lost.
Holding a letter with faded color, she reaches a mansion of the night.
Fukimi na youkan no kowareta tobira o tataku
She knocks on the broken door of the eerie mansion.
"Dareka imasenka"
"Oya oya, okomari desuka?"
"YOUKOSO..."
"Fushigi no yakata e..."
"Ocha o meshiagare♪"
"Is anybody home?"
"Oh my, what happened to you?"
"Welcome..."
"...to this mysterious mansion..."
"Please have some tea♪"
Mina mina atsumatte kyakujin wa "Nebumi" o sareru
Once everyone has gathered, the guest is being "evaluated".
"Demo, koushite au no mo nanika no midori"
"NARA, PAATII, PAATII!!"
"You know, it must be fate for us to meet like this."
"If so, party, party!!"
'"Kangei shiyou!"'
"'We must offer a proper welcome!'"
"Hurry, HurrY!!"
"WAIN o tsuide"
"Donchan donchan♪"
"Kanpai shimashou"
"Are you readY??"
"Junbi wa ii?"
"Hurry, hurry!!"
"Pour some wine."
"Let's make some sound!♪"
"How about a toast?"
"Are you ready??"
"Are you ready?"
'"Saa, hajimeyou"'
"'Then let's begin.'"
Kimi ga shuyaku no Crazy nighT WAIN katate ni sharekonde
Hodoyoku yoi ga mawattara tanoshiku natte kichatta?
You're the focus of this crazy night. Dressed up stylishly, with wine in one hand,
once you've gotten somewhat drunk, are you having fun now?
Utaeba odore sawagou ze sui mo amai mo wasurete sa
Ki ga kurucchau hodo ni tanoshinjae Happy☆nighT
Sing. Dance. Let's make some noise. Forget everything good and bad.
Just have fun to the point of going mad in this happy☆night!
Utage kara ichiya ake "Nanika" ga OKASHII no desu
Nemutte okite mita keredo ikkou ni asa ga konai no desu
After the feast and the night, "something" feels strange.
When she's about to get up after some sleep, morning is nowhere to be seen.
"Himitsu o..."
"Oshiete ageru yo...?"
'"Tokei o mite goran...☆'"
"Let us..."
"...share a secret with you..."
"'Take a look at the clock...☆'"
Musume wa kowaku nari himitsu no heya ni nigekomu
Omotai tobira o aketara soko wa...
'"Jesus, jesuS!!"'
Hitsugi no yama datta
The girl, scared, escapes into a secret chamber.
As soon as she opens the heavy door, there she sees...
"'Jesus, Jesus!!'"
...a mountain of caskets.
"Ara ara..."
"Mite shimatta ne..."
"Danger!! dangeR!!"
"Kowagaranai de?♪"
"Where are you goinG??"
"Doko ni yuku no desu?"
"Oh dear..."
"So you saw..."
"Danger!! Danger!!"
"Don't be afraid, okay?♪"
"Where are you going??"
"Where are you going?"
'"Omachinasai♥"'
"'Won't you please wait?♥'"
Kimi ga shuyaku no Crazy nighT daihondoori ni susumu no kai?
Koyoi wa dou naru? EndinG subete wa sou, kimi shidai sa
You're the focus of this crazy night. Will everything go according to the script?
What will happen tonight? The ending is all up to you to decide.
Sagase sagase Happy enD junban machigaetara o-wa-ri♡
True enD wa hitsugi iki? saa, konya mo Bad ∞ End ∞ Night?
Search. Search for the happy end[ing]. If you go out of order, it'll be o-v-e-r.♡
Does the true end[ing] lead to a casket? Will tonight be another Bad ∞ End[ing] ∞ Night?
"Doushitara uchi ni kaereru no kana?"
"Butai ga owareba..."
"Kaereru deshou..."
"Happy enD no kagi wa..."
"Doko ni ochiteiru no?"
"KIRARI to tsumetaku hikaru kagi..."
"How will I be able to return home?"
"Once this stage play ends..."
"...you might be able to go home."
"Where did I drop..."
"...the key to the happy end[ing]?"
"It was a key with a cold gleam..."
"...miittsukketa"
"...Fooooooound ya!"
Watashi ga shuyaku no Crazy nighT NAIFU katate ni sharekoube
Hodoyoku furimawashitara... tanoshiku natte kichatta♥♡
I'm the focus of this crazy night, with a knife in one hand and a skull in another.
With one simple wave of my knife... I was having so much fun!♥♡
Nigero! Nigero! Ichimokusan ni! Butai, serifu mo wasurete sa
Ki ga kurucchau hodo ni kowashichae Bad ∞ End ∞ Night
Run! Run! As fast as you can! Forget the stage and your lines!
Break everything to the point of going mad! Bad ∞ End[ing] ∞ Night.
Kimi ga shuyaku no Crazy nighT KASUTO mo butai mo naku natte
Monogatari ga owattara saa, minna de kaerimashou ka
You're the focus of this crazy night. Once the cast and the stage are gone,
and the curtain has fallen, how about let's all go home together?
Utae odore sawagou ze sui mo amai mo wasurete sa
Ki ga kurucchau hodo ni tanoshinjae Bad ∞ End ∞ Night
Sing. Dance. Let's make some noise. Forget everything good and bad.
Just have fun to the point of going mad in this Bad ∞ End[ing] ∞ Night.
Shizuka ni natta heya no naka hakushu o okuru nazo no kage
"Koyoi wa yoi butai deshita..." tegami o hirotte naiteita
In the room that has quieted down, there's a mysterious shadow who received much applause.
"It was a great stage play tonight..." Picking up a letter, the shadow started crying.
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