April Fools' Day (2023)

For April Fools' Day in 2023, both the Kamiyama High School and the Miyamasuzaka Girls Academy were replaced with a single academy, the All Music MIKUdemy, and its principal was Mikudayo! The characters were also all been shuffled into 4 different classes. Alongside this change, new area conversation were introduced and the virtual singers were let into Shibuya? once more. Unlike last year, where characters covered songs, all characters sang in the song Be The MUSIC! by kinoshita.
== Shibuya? ==
Shibuya? was updated with two locations, the MIKUdemy Classroom, and the MIKUdemy Sports Field. Nenerobo and Mikudayo can also be seen flying in the map.
File:Shibuya (April Fools' 2023).png | Shibuya?
File:Empty SEKAIs (April Fools' 2023).png | The empty SEKAIs
File:Virtual singers in Shibuya.png | Virtual singers seen in Shibuya?
File:Characters in the MIKUdemy Sports Field.png | Characters in the sports field
File:Mikudayo in the MIKUdemy Classroom.png | Mikudayo in the classroom
== All Music MIKUdemy ==
All Music MIKUdemy is a school that suddenly appeared in Shibuya. It replaces the existing schools in the game during April Fools' Day 2023.
 
File:Mikudayo sensei chibi (April Fools' 2023).png | Mikudayo as principal of All Music MIKUdemy
=== Pure Heart Class ===
:The peaceful and heartwarming Pure Heart Class ♪
This is a class with a pleasantly calm and fluffy atmosphere. When talking about this class, students from other classes would get concerned while asking "Where's the punchline?!"
The Pure Heart class consists of Ichika, Shizuku, Toya, Emu, Kanade, and Miku (25-ji, Nightcord de.).
File:Kanade chibi (April Fools' 2023).png | Kanade in a school uniform
File:25-ji, Nightcord de. Miku chibi (April Fools' 2023).png | 25-ji, Nightcord de. Miku in a school uniform
=== Solid Heart Class ===
:Realistic and stoic! That's the Solid Heart Class!
This is a class of students who are calm and objective. For some reason, they seem to worry and care for the students of Pure Heart Class...
The Solid Heart class consists of Shiho, Airi, Akito, Nene, Ena, and KAITO (Wonderlands×Showtime).
File:Wonderlands×Showtime KAITO chibi (April Fools' 2023).png | Wonderlands×Showtime KAITO in a uniform
=== Passion Heart Class ===
:When an idea comes up, let's act immediately! We're the Passion Heart Class!
This is a class full of action-oriented students. When passing by this class, please watch out for the energetic students and flying drones.
The Passion Heart Class consists of Saki, Minori, An, Rui, Mizuki, Rin (MORE MORE JUMP!), and Len (Vivid BAD SQUAD).
File:MORE MORE JUMP! Rin chibi (April Fools' 2023).png | MORE MORE JUMP! Rin in a school uniform
File:Vivid BAD SQUAD Len chibi (April Fools' 2023).png | Vivid BAD SQUAD Len in a school uniform
=== Cautious Heart Class ===
:The thoughtful and firm Cautious Heart Class!
This is a class of students who possess excellent leadership skills. Their warm consideration and sympathy for the other students are very remarkable.
The Cautious Heart Class consists of Honami, Haruka, Kohane, Tsukasa, Mafuyu, Luka (Leo/need), and MEIKO (Vivid BAD SQUAD).
File:Leo-need Luka chibi (April Fools' 2023).png | Leo/need Luka in a school uniform
File:Vivid BAD SQUAD MEIKO chibi (April Fools' 2023).png | Vivid BAD SQUAD MEIKO in a school uniform
== Song ==
Be The MUSIC! by kinoshita was released on April 1st and featured the entire cast of SEKAI. The full version with a 2D MV was posted on Project SEKAI's channel after being released in game.
== Nenerobo store page ==
A page to purchase a life-size replica of Nenerobo, complete with its AI, appeared on Colorful Palette's web store. This page has since been taken down and replaced with a different page to purchase mini-size figure of Nenerobo.
An archived version of the original store page can be found on Archive.org.
== External links ==
* Life-size Nenerobo replica announcement
* Mini-size Nenerobo figure announcement
* Pure Heart Class announcement
* Solid Heart Class announcement
* Passion Heart Class announcement
* Cautious Heart Class announcement