Penthouse - Ichi Ni no San Video (MV)
Welcome to Demon School! Iruma-kun Season 4 Opening Theme Video
Japanese Title: 一二三
English Title: One Two Three
Description: Season 4 Opening Theme
From Anime: Mairimashita! Iruma-kun (魔入りました！入間くん)
Performed by: Penthouse
Lyrics by: Takuma Oohara (大原拓真)
Composed by: Shintarou Namioka (浪岡真太郎)
Arranged by: Penthouse
Released: April 8th, 2026
TV Size Full Size Official
Get up Get up Get up Get up
Agari na sawagi na akumade wagamama
Yuutousei You know I'm saying?
Shiranee yo hana kara
Heion mo seigi mo sutete
Aa genkai ne
Nakidashitaku nattara
Kenran na stage e
Get up Get up Get up Get up
Akumade wagamama
Gouon wa fui ni yuuga
Sono te tsunaidara hajimari da
Amaten aketara zenchi zennou abaraku Make some noise
Sawage yo mani mani
Man'in onrei!
Ichi ni no san de makuake da Party
Atsumare ya daikassai
(Every Every Everyone!)
Two & Three & Four de yumemiyou ze Darling
Urei nado oite tte
(Every Every Everybody!
Everybody)
Everybody)
Ichi ni no san de makuake da Party
[Full Version Continues]
Enchousen? What you saying?
Ira nee yo hana kara
Nekkyo wa setsuna de kekkou
Isoide kanrinzai hourikome, issai gassai
[thanks for visiting animethemesongs.com]
Un-dameshi sae stage de
Get up Get up Get up Get up
Ake made mada mada
Honnou wa touni jiyuu da
Kokoro kawaitara hoshigarina
Danchou agareba yuigadokuson hishimeku Clap your hands
Sawage ya mani mani nemuru maji
Man'in onrei!
Ichi ni no san de wakiagare Party!
Tsugi wa dare? Daikassai
(Every Every Everyone!)
Two & Three & Four wo yamenai de Darling
Chuuchou wa oidasite
(Every Every Everybody!)
Tachikomeru negai-tachi wa
Sakebareru sono toki wo matteru
Waga tame ni kane wo narase baby
Dareka no mono janai daikansei wa sou omae dake no fanfare
Man'in onrei!
Ichi ni no san de makuake da Party
Atsumare ya daikassai
(Every Every Everyone!)
Two & Three & Four de yumemiyou ze Darling
Urei nado oite tte
(Every Every Everybody!
Everybody)
Everybody)
Ichi ni no san de makuake da Party
Get up, get up, get up, get up
A wild ruckus, all selfishness
Honor student? You know I'm saying?
I don't care, not from the start
Throw away peace and justice
Ah, this is my limit
If you feel like crying
Step onto the dazzling stage
Get up, get up, get up, get up
Selfishness to the fullest
The roar suddenly turns graceful
Once we hold hands, it begins
When the lights come up, omniscient and everywhere, make some noise
Let's go wild, mani mani
Full house!
One, two, three, curtains rise, Party!
Gather 'round, great applause
(Every Every Everyone!)
Two & Three & Four, let's dream, Darling
Leave all worries behind
(Every Every Everybody!
Everybody)
Everybody)
One, two, three, curtains rise, Party
[Full Version Continues]
Extra round? What you saying?
Don't need it, not from the start
Frenzy is fine if it's fleeting
Hurry and throw it all in, every single bit
[thanks for visiting animethemesongs.com]
Even gambling on luck, on stage
Get up, get up, get up, get up
Still more until dawn
Instincts are already free
When my heart dries, I want it more
When the curtain rises, I'm supreme, pressing in, Clap your hands
Let's go wild, mani mani, no sleeping
Full house!
One, two, three, rise up, Party!
Who's next? Great applause
(Every Every Everyone!)
Two & Three & Four, don't stop, Darling
Kick out hesitation
(Every Every Everybody!)
The wishes that gather
Wait for the moment they're shouted
Ring the bell for us, baby
This great cheer isn't anyone else's-it's your personal fanfare
Full house!
One, two, three, curtains rise, Party!
Gather 'round, great applause
(Every Every Everyone!)
Two & Three & Four, let's dream, Darling
Leave all worries behind
(Every Every Everybody!
Everybody)
Everybody)
One, two, three, curtains rise, Party
Get up Get up Get up Get up
上がりな騒ぎな あくまで我儘
優等生 You know I'm saying？
知らねえよハナっから
平穏も正義も捨てて
嗚呼 限界ね
泣き出したくなったら
絢爛なステージへ
Get up Get up Get up Get up
飽くまで我儘
轟音は不意に優雅
その手繋いだら始まりだ
暗転明けたら全知全能 遍く Make some noise
騒げよまにまに
満員御礼！
一二三で幕開けだ Party
集まれや大喝采
(Every Every Everyone！)
Two&Three&Fourで夢見ようぜ Darling
憂いなど置いてって
(Every Every Everybody！
Everybody)
Everybody)
一二三で幕開けだParty
[この先はFULLバージョンのみ]
延長戦？ What you saying？
要らねえよ ハナっから
熱狂は刹那で結構
急いで金輪際 放り込め 一切合切
[アニメソングリリックスのご利用ありがとうございます]
運試しさえステージで
Get up Get up Get up Get up
明くまでまだまだ
本能はとうに自由だ
心乾いたら欲しがりな
緞帳上がれば唯我独尊 ひしめく Clap your hands
騒げやまにまに眠るまじ
満員御礼！
一二三で湧き上がれ Party！
次は誰？大喝采
(Every Every Everyone！)
Two&Three&Fourを止めないで Darling
躊躇いは追い出して
(Every Every Everybody！)
立ちこめる願い達は
叫ばれるその時を待ってる
我が為に 鐘を鳴らせベイベー
誰かのものじゃない大歓声はそうお前だけのファンファーレ
満員御礼！
一二三で幕開けだ Party
集まれや大喝采
(Every Every Everyone！)
Two&Three&Fourで夢見ようぜ Darling
憂いなど置いてって
(Every Every Everybody！
Everybody)
Everybody)
一二三で幕開けだ Party
Romaji
[show all]
[show all]
Get up Get up Get up Get up
Agari na sawagi na akumade wagamama
Yuutousei You know I'm saying?
Shiranee yo hana kara
Heion mo seigi mo sutete
Aa genkai ne
Nakidashitaku nattara
Kenran na stage e
Get up Get up Get up Get up
Akumade wagamama
Gouon wa fui ni yuuga
Sono te tsunaidara hajimari da
Amaten aketara zenchi zennou abaraku Make some noise
Sawage yo mani mani
Man'in onrei!
Ichi ni no san de makuake da Party
Atsumare ya daikassai
(Every Every Everyone!)
Two & Three & Four de yumemiyou ze Darling
Urei nado oite tte
(Every Every Everybody!
Everybody)
Everybody)
Ichi ni no san de makuake da Party
[Full Version Continues]
Enchousen? What you saying?
Ira nee yo hana kara
Nekkyo wa setsuna de kekkou
Isoide kanrinzai hourikome, issai gassai
Un-dameshi sae stage de
Get up Get up Get up Get up
Ake made mada mada
Honnou wa touni jiyuu da
Kokoro kawaitara hoshigarina
Danchou agareba yuigadokuson hishimeku Clap your hands
Sawage ya mani mani nemuru maji
Man'in onrei!
Ichi ni no san de wakiagare Party!
Tsugi wa dare? Daikassai
(Every Every Everyone!)
Two & Three & Four wo yamenai de Darling
Chuuchou wa oidasite
(Every Every Everybody!)
Tachikomeru negai-tachi wa
Sakebareru sono toki wo matteru
Waga tame ni kane wo narase baby
Dareka no mono janai daikansei wa sou omae dake no fanfare
Man'in onrei!
Ichi ni no san de makuake da Party
Atsumare ya daikassai
(Every Every Everyone!)
Two & Three & Four de yumemiyou ze Darling
Urei nado oite tte
(Every Every Everybody!
Everybody)
Everybody)
Ichi ni no san de makuake da Party
English
[show all]
[show all]
Get up, get up, get up, get up
A wild ruckus, all selfishness
Honor student? You know I'm saying?
I don't care, not from the start
Throw away peace and justice
Ah, this is my limit
If you feel like crying
Step onto the dazzling stage
Get up, get up, get up, get up
Selfishness to the fullest
The roar suddenly turns graceful
Once we hold hands, it begins
When the lights come up, omniscient and everywhere, make some noise
Let's go wild, mani mani
Full house!
One, two, three, curtains rise, Party!
Gather 'round, great applause
(Every Every Everyone!)
Two & Three & Four, let's dream, Darling
Leave all worries behind
(Every Every Everybody!
Everybody)
Everybody)
One, two, three, curtains rise, Party
[Full Version Continues]
Extra round? What you saying?
Don't need it, not from the start
Frenzy is fine if it's fleeting
Hurry and throw it all in, every single bit
Even gambling on luck, on stage
Get up, get up, get up, get up
Still more until dawn
Instincts are already free
When my heart dries, I want it more
When the curtain rises, I'm supreme, pressing in, Clap your hands
Let's go wild, mani mani, no sleeping
Full house!
One, two, three, rise up, Party!
Who's next? Great applause
(Every Every Everyone!)
Two & Three & Four, don't stop, Darling
Kick out hesitation
(Every Every Everybody!)
The wishes that gather
Wait for the moment they're shouted
Ring the bell for us, baby
This great cheer isn't anyone else's-it's your personal fanfare
Full house!
One, two, three, curtains rise, Party!
Gather 'round, great applause
(Every Every Everyone!)
Two & Three & Four, let's dream, Darling
Leave all worries behind
(Every Every Everybody!
Everybody)
Everybody)
One, two, three, curtains rise, Party
Kanji
[show all]
[show all]
Get up Get up Get up Get up
上がりな騒ぎな あくまで我儘
優等生 You know I'm saying？
知らねえよハナっから
平穏も正義も捨てて
嗚呼 限界ね
泣き出したくなったら
絢爛なステージへ
Get up Get up Get up Get up
飽くまで我儘
轟音は不意に優雅
その手繋いだら始まりだ
暗転明けたら全知全能 遍く Make some noise
騒げよまにまに
満員御礼！
一二三で幕開けだ Party
集まれや大喝采
(Every Every Everyone！)
Two&Three&Fourで夢見ようぜ Darling
憂いなど置いてって
(Every Every Everybody！
Everybody)
Everybody)
一二三で幕開けだParty
[この先はFULLバージョンのみ]
延長戦？ What you saying？
要らねえよ ハナっから
熱狂は刹那で結構
急いで金輪際 放り込め 一切合切
運試しさえステージで
Get up Get up Get up Get up
明くまでまだまだ
本能はとうに自由だ
心乾いたら欲しがりな
緞帳上がれば唯我独尊 ひしめく Clap your hands
騒げやまにまに眠るまじ
満員御礼！
一二三で湧き上がれ Party！
次は誰？大喝采
(Every Every Everyone！)
Two&Three&Fourを止めないで Darling
躊躇いは追い出して
(Every Every Everybody！)
立ちこめる願い達は
叫ばれるその時を待ってる
我が為に 鐘を鳴らせベイベー
誰かのものじゃない大歓声はそうお前だけのファンファーレ
満員御礼！
一二三で幕開けだ Party
集まれや大喝采
(Every Every Everyone！)
Two&Three&Fourで夢見ようぜ Darling
憂いなど置いてって
(Every Every Everybody！
Everybody)
Everybody)
一二三で幕開けだ Party
Japanese Title: 魔入りました！入間くん
English Title: Welcome to Demon School! Iruma-kun
Also Known As:
- Welcome to Demon School! Iruma-kun 2nd Season
- Mairimashita! Iruma-kun 3rd Season
- Season 4: April 4th, 2026
- Season 3: October 8th, 2022
- Season 2: April 17th, 2021
- Season 1: October 5th, 2019
