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 |
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Story: Lullaby: A Gentle Nightmare - 2 | Log in |
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Story: Lullaby: A Gentle Nightmare - 3 | Log in |
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Story: Lullaby: A Gentle Nightmare - 4 | Log in |
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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 |
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Background: Hey Kids♪ Sing with Retired Idols!! Stage | Clear Amazing (すごい) level |
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Diamond x15 | Clear Super Amazing (とてもすごい) level |
Lines[]
| 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♪ | |
| 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 | |
| 『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！ | |
| 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 | |
| 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！ | |
| 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 | |
| こんにちは～！ お兄さんと、いっぱいいっぱいあそぼうな！ | |
| 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 |
 Login  My Room  Campaign Page (Jun)  Campaign Page (Kohaku)  Story  Tutorial 1  Tutorial 2  Tutorial 3  Tutorial 4  Tutorial 5  Tutorial 6  Game Page  Gameplay  Pause  Success 1  Success 2  Fail  Info Banner  Logo  Login  Campaign Page  Live End  Easy  Normal  Hard  Expert |
| Website |
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| 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！！ |
| Campaign Navigation | |
| Campaign | Years |
|---|---|
| Birthday | 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025 |
| Anniversary |                 
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| New Year |         
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| Valentine's Day |         
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| White Day |         
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| April Fools |         
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| Summer Vacation |     
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| Halloween |      
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| Autumn |   
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| Christmas |       
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| Milestone |        
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| Other |              Selection 10 Unit Campaign
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| Anime Linked |   
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| Album Release |              
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| Global-Exclusive |                        
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