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)
From Season: Summer 2026
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
Year: 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 animesonglyrics.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 animesonglyrics.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
