おこちゃま戦争 (Okochama Senso)

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Background[]

“There is no other battle fought more honorably. Yai Yai Yai Yai~tsu!(`o´)”
—Author's comment

"Kiddie War" is an original song by Giga. The song tells the story of two siblings (Len and Rin) who, at the request of a butler, aim to best the other for the throne. The two engage in a "Kiddie War", both of them trying to gain the upper hand over each other in order to prove to the butler that they are the one worthy of the title emperor. However, all of their squabbling results in their contest ending with a draw.

The song was originally written by Giga and Reol for Kradness and Reol; however, Len and Rin's version was released at the same time.

This song has entered the Hall of Legend and exceeded over 10 million YouTube views. Hence, this is one of Giga's most notable songs, and one of the Kagamines' most notable duets.

Preceding and succeeding versions[]

Reol and kradness's Version

Featuring	Reol, kradness
Producers	Giga (music), Reol (lyrics, vocals), Kradness (vocals), △○□× (illustration), Okiku (movie)
Categories	Human Version

Project SEKAI Version [SEKAI] (Game size - 3DMV)

Featuring	Wonderlands x Showtime: Kagamine Rin, Kagamine Len, Kusanagi Nene (CV: Machico), Tenma Tsukasa (CV: Hirose Daisuke)
Producers	Matsumoto Nagisa (choreography), Jakko, Okuyama Keito, TACCHI, Matsumoto Nagisa (motion actor) SOLID CUBE (motion capture) SEGA, Colorful Palette, Crypton Future Media, Inc.
Categories	VOCALOID Cover; Human Cover; Original MV; In-game Content
Description	Featured in the game Project SEKAI COLORFUL STAGE! feat. Hatsune Miku.

Project SEKAI Version [SEKAI] (Full)

Featuring	Wonderlands x Showtime: Kagamine Rin, Kagamine Len, Kusanagi Nene (CV: Machico), Tenma Tsukasa (CV: Hirose Daisuke)
Producers	SEGA, Colorful Palette, Crypton Future Media, Inc.
Categories	VOCALOID Cover; Human Cover; Album-exclusive Content
Description	Full version, featured in Wonderlands x Showtime's 2nd full album Wonderlands x Showtime SEKAI ALBUM Vol.2, featured in the game Project SEKAI COLORFUL STAGE! feat. Hatsune Miku.

Project SEKAI Version [Another Vocal]

Featuring	Wonderlands x Showtime: Tenma Tsukasa (CV: Hirose Daisuke), Kusanagi Nene (CV: Machico)
Producers	SEGA, Colorful Palette, Crypton Future Media, Inc.
Categories	Human Cover; In-game Content
Description	Featured in the game Project SEKAI COLORFUL STAGE! feat. Hatsune Miku.

Lyrics[]

Singer + Color
Rin	Both
Len	Both

Japanese (日本語歌詞)	Romaji (ローマ字)
昔々のそのまた昔	mukashi mukashi no sono mata mukashi
とある貴族の仲良しな兄弟	toaru kizoku no nakayoshi na kyoudai
ry 以下略称	ika ryakushou
「ちゃんとやれ！」	"chanto yare!"

じいやが呼ぶ席につけよーいどん！	jiiya ga yobu seki ni tsuke yooi don!
ナイフとフォークで応戦いたしますの	naifu to fooku de ousen itashimasu no
だって僕らはブルジョアの	datte bokura wa burujoa no
立派な立派な貴族様なんですですの	rippa na rippa na kizoku-sama nan desu desu no
ひれふせ愚民君との違いを	hirefuse gumin kimi to no chigai o
ヴァイヴァイスロイ見せてやるぜ	vaivaisuroi miseteyaru ze
おいまてまてまた勝手にそんな	oi mate mate mata katte ni sonna
見抜けるようなハッタリかまして	minukeru you na hattari kamashite
はーいはーいはいはい	haai haai hai hai
お兄様の仰せのままに（笑）	oniisama no oose no mama ni

あﾞーむかつくぜ！まーぢむかつくぜ！	aa mukatsuku ze! maaji mukatsuku ze!
兄に対して生意気な態度	ani ni taishite namaiki na taido
閧の声ゴングを鳴らせ	toki no koe gongu o narase
ケンカ勃発で宣戦布告	kenka boppatsu de sensen fukoku
悪戯して悪ノリして	itazura shite waru nori shite
ほらほら煽ってく Style で	hora hora aotte ku sutairu de
“大安売り” 買っちゃったら	"ooyasuuri" kacchattara
毎度ありがとうで君の負け！	maido arigatou de kimi no make!
（っしゃぁ！）	(sshyaa!)

拙い引き出しと	tsutanai hikidashi to
煽りあいの駆け引きでキメる	aoriai no kakehiki de kimeru
兄の威厳見せるため飴と飴	ani no igen miseru tame ame to ame
火花散るチル両者の目と目	Hibana chiru chiru ryousha no me to me
俺をだれだと思ってる	ore o dare da to omotteru
くらえ！おれさまがルールブック▼	kurae! ore-sama ga ruuru bukku▼
へたれじゃないひよってない	hetare ja nai hiyotte nai
ちょっと勇気が足りないだけ	chotto yuuki ga tarinai dake
さぁさぁみなさんお手を拝借	saa saa mina-san o-te o haishaku
当たり前だろ余裕しゃくしゃく	atarimae daro yoyuu shaku shaku
生まれながらにしてチート	umarenagara ni shite chiito
やべぇ煌めく人生がスタート	yabee kirameku jinsei ga sutaato
当然です見てみな由緒はガチ勢	touzen desu mite mina yuisho wa gachi zei
ハイ論破ハイ論破ハイ論破	hai ronpa hai ronpa hai ronpa
もらってくぜ Vサイン	moratteku ze V sain
イェイ！(ｖ＾―゜)♪	yei! (ｖ＾―゜)♪
はーいはーいはいはい	haai haii hai hai
はなまるよくできまちた☆	hanamaru yoku dekimachita ☆

あﾞーむかつくぜ！まーぢむかつくぜ！	aa mukatsuku ze! maaji mukatsuku ze!
僕に向かって減らず口なんざ	boku ni mukatte herazuguchi nan za
とっておきをきみに見舞え	totteoki o kimi ni mimae
報復！制裁！挑発しちゃって	houfuku! seisai! chouhatsu shichatte
意地悪して一枚上	ijiwaru shite ichi mai ue
チャンスは貰ってくスタンスで	chansu wa moratteku sutansu de
痛恨ミス！あっちゃっちゃー	tsuukon misu! acchacchaa
お生憎（あいにく）様だね君の負け！	o-ainiku-sama da ne kimi no make!
(Yes!)

だけどキミキミだけが	dakedo kimi kimi dake ga
（せいっやあっとおっやあっうっうっやあっはっ）	(sei yaa too yaa uu uu yaa haa)
ボクに似合いのライバル	boku ni niai no raibaru
（せいっやあっとおっやあっうっとおっやあっはっ）	(sei yaa too yaa u too yaa ha)
オチるのも凹んでんのも	ochiru no mo hekonden no mo
（うっはっせいっやあっやぁっせいっはっ）	(u ha sei yaa yaa sei ha)
調子狂わされるから	choushi kuruwa sareru kara
今宵もてめーとやいやいやいやい	koyoi mo temee to yai yai yai yai

大体兄様がいつもそうやってナヨナヨしてるから	daitai ani-sama ga itsumo sou yatte nayonayo shiteru kara
お前がいつも一人で暴走するから	omae ga itsumo hitori de bousou suru kara
僕が兄様の分まで積極的になってやってるんだよ	boku ga ani-sama no bun made sekkyokuteki ni natte yatteru n da yo
オレが尻拭いせざるを得なくなるんだろうが	ore ga shirinugui sezaru o enaku naru n darou ga
もう少し感謝してほしいね	mou sukoshi kansha shite hoshii ne
あとオレは別にヘタレじゃない慎重なだけだ	ato ore wa betsu ni hetare ja nai shinchou na dake da
年上のくせに全然頼りにならないお兄様とか名ばかりだよもう	toshiue no kuse ni zenzen tayori ni naranai oniisama toka na bakari da yo mou
メイドたちも爺やも言ってたぞ	meido tachi mo jiiya mo itteta zo
今日から僕が兄ねこれ決定！	kyou kara boku ga ani ne kore kettei!
ほんともう少し落ち着いてくれって	honto mou sukoshi ochitsuite kurette
ハイ決定	hai kettei
あ゛ーもう！うるせぇ～	aa mou! urusee~

あﾞーむかつくぜ！まーぢむかつくぜ！	aa mukatsuku ze! maaji mukatsuku ze!
憎まれ口はおくちをチャック	nikumareguchi wa okuchi o chakku
閧の声ゴングを鳴らせ	toki no koe gongu o narase
次世代エンペラーはこの「僕だ！」「俺だ！」	jisedai enparaa wa kono "boku da!" "ore da!"
悪戯して悪ノリして	itazura shite waru nori shite
ほらほら煽ってく Style で	hora hora aotte ku sutairu de
1から100 いただきます	ichi kara hyakuu itadaki masu
毎度ありがとうで君のm･･･	maido arigatou de kimi no m...
まさかのひ、引き分け！？	masaka no hi, hikiwake!?
えーっ	ee

Derivatives[]

Circus-P's Cover ft. Nekomura Iroha and SF-A2 miki

Featuring	Nekomura Iroha and SF-A2 miki
Producers	Circus-P
Categories	VOCALOID Cover

Mahiruno's Cover ft. Utatane Piko and IA Type C

Featuring	Utatane Piko and IA Type C
Producers	Mahiruno (cover), UtauReizo (UST)
Categories	VOCALOID Cover

ハス KEI's Cover ft. KAITO

Featuring	KAITO V1 and KAITO V3
Producers	ハス KEI (cover), KIRA (UST), Ekkoberry (UST)
Categories	VOCALOID Cover
Description	KAITO V1 sings Rin's part, while KAITO V3 sings Len's part.

MelissaChao's Cover ft. Hatsune Miku and Kagamine Len

Featuring	Hatsune Miku and Kagamine Len
Producers	MelissaChao (cover, VSQx, PV), KIRA (UST), Ekkoberry (UST)
Categories	VOCALOID Cover

anakin's Cover ft. IA and Yuzuki Yukari

Featuring	IA and Yuzuki Yukari
Producers	anakin (cover)
Categories	VOCALOID Cover

Creuzer's Cover ft. Yuezheng Ling and Yuezheng Longya

Featuring	Yuezheng Ling and Yuezheng Longya
Producers	Kream (UST), Yuyan DX (video), Ouyoudafeiyang (illustrator), Guozhiliangcai (lyrics), Mobaiqiantu (collaboration), Creuzer (tuning, mixing)
Categories	VOCALOID Cover

UtauReizo's Cover ft. Reizo Raine and Rena Raine

Featuring	Reizo Raine VCV ver 2.0, Rena Raine VCV ver 1.5
Producers	UtauReizo (cover, UST, mixing)
Categories	UTAU Cover

Tadashi's Cover ft. Yokune Ruko

Featuring	Yokune Ruko
Producers	Tadashi (cover), YusukeKira (UST), EchoBlossom123 (UST)
Categories	UTAU Cover

rachie & JubyPhonic's English Cover

Featuring	rachie, JubyPhonic
Producers	rachie, JubyPhonic (English lyrics)
Categories	Human Cover; Alternative Language

Aho no Sakata and Uratanuki's Cover

Featuring	Uratanuki, Aho no Sakata
Categories	Human Cover

Akio's Cover

Featuring	Akio
Categories	Human Cover

AquShio's Cover

Featuring	Aqushio (Murasaki Shion (as Rin), Minato Aqua (as Len))
Producers	近所のにーちゃん (movie), ずみちり (illust), ごず (mix), Kijibato (instruments)
Categories	Human Cover; Fanmade PV; Parody
Description	A cover released during Murasaki Shion's birthday, featuring additional vocals by Minato Aqua; the cover alters the lyrics to more closely reflect the two's "Neighbor Wars" in Minecraft.

FOXDEMON's Cover

Featuring	FOXDEMON (Shirakami Fubuki (as Rin), Aragami Oga (as Len))
Producers	iimo (movie), 疾狼 (illust), Bernis (mix), HAMA (instruments)
Categories	Human Cover; Fanmade PV

Kogeinu and 96Neko's Cover

Featuring	Kogeinu, 96Neko
Categories	Human Cover

Kureiji Ollie & Astel Leda's Cover

Featuring	Kureiji Ollie, Astel Leda
Producers	Farhan Sarasin (mix), Kurumitsu (illust), Rumskii (video)
Categories	Human Cover; Fanmade PV

ARSMAGNA's Dance Cover

Featuring	Kagamine Rin, Kagamine Len
Producers	ARSMAGNA
Categories	Dance Cover

K'suke & Aoi's Dance Cover

Featuring	Kagamine Rin, Kagamine Len
Producers	K'suke (choreography, dance), Aoi (dance), Kamakiri (shooting)
Categories	Dance Cover

25Shitsuji's Guitar Arrangment

Producers	25Shitsuji
Categories	Arrangement

Nattou Cheese's MMD PV

Featuring	Kagamine Rin, Kagamine Len
Producers	Nattou Cheese (video), Stylish-P (motion)
Categories	MMD PV

ZarlaSheenaza's PV

Featuring	Uratanuki, Akio
Producers	ZarlaSheenaza (video), Uratanuki, Akio (audio)
Categories	PV

Ace Attorney PB

Featuring	Rachie, Jubyphonic
Producers	Griffin Huntress
Categories	Parody; PV
Description	A PV of the song, using actual in game footage of Ace Attorney.

＿＿'s Cover

Featuring	＿＿(Underbar)
Producers	Hanzo (mixing)
Categories	Human Cover; Parody
Description	Underbar's Freedom cover of Okochama Sensou.

Cupula & Mentoku's Cover

Featuring	Cupula, Mentoku
Categories	Human Cover; Parody

Other media appearances[]

Discography[]

This song is featured on the single おこちゃま戦争 (Okochama Sensou).

This song is also featured in the compilation album Download feat. 初音ミク.

Concerts[]

This song is featured in the following concerts:

Kagamine Rin & Len Happy 14th Birthday Party 「Two You☆★」
Magical Mirai 2022 10th Anniversary (Osaka, day 1 and 3/Tokyo, day 1 and 3)
Miku Expo North America 2024
Miku Expo Europe 2024
Miku Expo New Zealand & Australia 2024

Video games[]

This song is featured in the following video games:

CHUNITHM Series[]

CHUNITHM STAR / STAR PLUS
CHUNITHM AMAZON / AMAZON PLUS
CHUNITHM CRYSTAL / CRYSTAL PLUS

CHUNITHM PARADISE / PARADISE LOST
CHUNITHM NEW / NEW PLUS

maimai Series[]

maimai ORANGE / ORANGE PLUS
maimai PiNK / PiNK PLUS
maimai MURASAKi / MURASAKi PLUS
maimai MiLK / MiLK PLUS

maimai FiNALE
maimai Deluxe / Deluxe PLUS
maimai Deluxe Splash / Splash PLUS
maimai UNiVERSE / UNiVERSE PLUS

O.N.G.E.K.I. Series[]

O.N.G.E.K.I. PLUS
O.N.G.E.K.I. SUMMER / SUMMER PLUS
O.N.G.E.K.I. R.E.D. / R.E.D. PLUS

O.N.G.E.K.I. bright / bright MEMORY

Other games[]

Hatsune Miku -Project DIVA- X (In the 'Chaos Medley: Giga Remix' medley)
#COMPASS Live Arena
Project SEKAI COLORFUL STAGE! feat. Hatsune Miku (Virtual Singer version by Kagamine Rin and Len; SEKAI version by Wonderlands x Showtime and Kagamine Rin and Len)

おこちゃま戦争 (Okochama Senso)

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