Hey Kids♪ Sing with Retired Idols!!

Hey Kids♪ Sing with Retired Idols!! (わくわく♪　おじさんといっしょ‼, wakuwaku♪ ojisan to issho!!) was the 2020 April Fools event featuring Jin, Akiomi, Jun, and Kohaku. 
==Duration==
Start: 4/1/20 at 0:00 JST
End: 4/1/20 at 23:59 JST
==Description==
*Entering the Event Banner at the bottom left or in Info will automatically unlock the first chapter of Lullaby.
**The story can also be read from the Campaign Story page.
*Top Button: Takes you to where you can play a memory game (Basic) or rhythm game (Music) by choosing one of the four difficulties.
**In Music only, there is a bar by the top left that controls your MV when playing: Pretty Video (きれいなえいぞう), Video (えいぞう), and Picture (え). These are equivalent to the usual MV settings offered.
*Bottom Left Button: Takes you to the official site.
*Bottom Right Button: Takes you to where you can read the story. 
*Complete every difficulty to receive the non-story rewards stated below.
==Rewards==
	Reward 	Requirements
	Story: Lullaby: A Gentle Nightmare - 1 	Log in
	Story: Lullaby: A Gentle Nightmare - 2 	Log in
	Story: Lullaby: A Gentle Nightmare - 3 	Log in
	Story: Lullaby: A Gentle Nightmare - 4 	Log in
	Card: (Singing Retired Idol) Jin Sagami 	Clear Easy (かんたん) level
	Card: (Singing Retired Idol) Akiomi Kunugi 	Clear Normal (ふつう) level
	Background: Hey Kids♪ Sing with Retired Idols!! Stage	Clear Amazing (すごい) level
	Diamond x15 	Clear Super Amazing (とてもすごい) level
==Lines==
Character	Text
Jin 	
Jin 	わくわくどきどきのおゆうぎタイム！　みんなでなかよくたのしんじゃおう♪
Jin 	よいこのみんな～！　今日もはりきって『あんさんぶる体操』やってみよう！
Akiomi 	
Akiomi 	『あんさんぶる体操』のじゅんびはいいかな？　さっそくはじめよう！
Akiomi 	よくきたね！　みんなでげんきいっぱいに、歌とダンスをたのしもう！
Jun 	
Jun 	げんきょくからだをうごかして、たのしい時間をすごしましょうね！
Jun 	よいこのみんな～！　お兄さんといっしょに、みんなでたのしくあそびましょう♪
Kohaku 	
Kohaku 	こんにちは～！　お兄さんと、いっぱいいっぱいあそぼうな！
Kohaku 	さぁさぁみんなあつまって！　おゆうぎの時間をはじめよか♪
==Gallery==
Game
Basic
Ojisan to Issho Basic Login Screen.png|Login
Ojisan to Issho Room Screen.png|My Room
Ojisan to Issho Main Screen.png|Campaign Page (Jun)
Ojisan to Issho Main Screen Kohaku.png|Campaign Page (Kohaku)
Ojisan to Issho Story Screen.png|Story
Ojisan to Issho Basic Tutorial 1.png|Tutorial 1
Ojisan to Issho Basic Tutorial 2.png|Tutorial 2
Ojisan to Issho Basic Tutorial 3.png|Tutorial 3
Ojisan to Issho Basic Tutorial 4.png|Tutorial 4
Ojisan to Issho Basic Tutorial 5.png|Tutorial 5
Ojisan to Issho Basic Tutorial 6.png|Tutorial 6
Ojisan to Issho Basic Game Screen.png|Game Page
Ojisan to Issho Basic Gameplay.png|Gameplay
Ojisan to Issho Pause Screen.png|Pause
Ojisan to Issho Success 1.png|Success 1
Ojisan to Issho Success 2.png|Success 2
Ojisan to Issho Failure.png|Fail
Ojisan to Issho Info Banner.png|Info Banner
----
Music (If different than Basic)
Ojisan to Issho Music Login Screen.png|Login
Ojisan to Issho Music Game Screen.png|Campaign Page
Ojisan to Issho Music Live End Screen.png|Live End
Ojisan to Issho Easy Reward.png|Easy
Ojisan to Issho Normal Reward.png|Normal
Ojisan to Issho Hard Reward.png|Hard
Ojisan to Issho Expert Reward.png|Expert
Website
Ojisan to Issho Jin Profile.png
Ojisan to Issho Akiomi Profile.png
Ojisan to Issho Other Profile.png
Ojisan to Issho Rabbit.png
Ojisan to Issho Dog.png
Ojisan to Issho Monkey.png
Ojisan to Issho Jin chibi.gif
Ojisan to Issho Akiomi chibi.gif
Ojisan to Issho Jun chibi.gif
Ojisan to Issho Kohaku chibi.gif
Ojisan to Issho Campaign Logo.png
Ojisan to Issho Logo Basic.png
Ojisan to Issho Logo Music.png
Ojisan to Issho Star 1.png
Ojisan to Issho Star 2.png
Ojisan to Issho Basic Game Examples.png
Ojisan to Issho Music Game Examples.png
Ojisan to Issho Icons 1.png
Ojisan to Issho Icons 2.png
Ojisan to Issho Icons 3.png
Ojisan to Issho Speech Bubble.png
Ojisan to Issho Header 1.png
Ojisan to Issho Header 2.png
Ojisan to Issho Header 3.png
Ojisan to Issho Header 4.png
Ojisan to Issho Header 5.png
Ojisan to Issho Header 6.png
Ojisan to Issho Footer.png
Ojisan to Issho Back to Top.png
Twitter
Ojisan to Issho Twitter Song Screen.png
Ojisan to Issho Twitter Game Screen.png
Ojisan to Issho Twitter Jin Icon.png
Ojisan to Issho Twitter Akiomi Icon.png
Videos
おじさんといっしょ！！ MV「あんさんぶる体操！！」
＃みんなでおどろうあんさんぶる体操！！
Category:Special Campaign
Category:April Fools