Passion at 25 is the first song ever to have a 25 master difficulty

Song name: Passion at 25

EASY - 3939!: What is the difficulty of this song on MASTER:

The intense voice of Hatsune Miku difficulty was changed from 29 to 30 on the version 2.0.0

Song name: The intense voice of Hatsune Miku

EASY - 3939!: What is the difficulty of this song on EXPERT:

Admiring the late-blooming cherry blossoms, alongside with passion at 25, are the only songs in game to have the difficulty level 25 on a MASTER

Song name: Admiring the late-blooming cherry blossoms

EASY - 3939!: What is the difficulty of this song on MASTER

The reference on the notecount that is mentioned on the hint is that 909 correspond to Emu's birthday: 09/09

Hint: the song is a commission of the game, and the note count is a reference of the character whose the song was commissioned for

MEDIUM - 3939!: Which song has the note count of 909 on both HARD, EXPERT and MASTER difficulty?

The append of this song has the biggest note count of all game, justfying it's 35 difficulty level

MEDIUM - 3939!: What is the note count of this song on APPEND

88 is Tsukasa's signature number for a diversity of reasons, some of them being the number of recognized constellations and the amount of keys on a piano.

Hint: There is another song that share's this same perculiarity that is Miku Miku ni Shite Ageru♪ (39), and likewise, the nurmber is the character's signature number

MEDIUM - 3939!: This song finishes with the same number on the note count of all it's difficulties, which song I am talking about?

Kitty is currently the ONLY comission in game that has difficult 28 on EXPERT (05/25/2025)

Song name: Kitty

HARD - 3939!: What is the difficulty of this song on EXPERT

For more crazy that it sounds, disappearence came first than intense voice, with disappearence coming on release (09/30/2020) and intense voice just comming 6 months later (03/30/2021)

Hint:..? We're on hard, you really thought I would put a tip?

HARD - 3939!: Which of those songs was added first?

METEOR is the only song who isn't the face song of a magical mirai

No hints

HARD - 3939!: Which song is the odd one out?

Holding the record since it's release, Daijobu desu ka? has the biggest note count in game (excluding intense voice APPEND) with 2555 notes in total, congrats cosMo@BousouP

EXPERT - 3939!: Aside from The intense voice of Hatsune Miku APPEND note count (4500), which song has the biggest note count of the game?

This is said by Tsukasa himself on Emu's initial 2* card story and can be seen on WxS journey to bloom episode, which you can see her on the audience of their first show

If I say anything it will be obvious so I'll abstain myself

EASY - Read it all: This character is the holder of the title "WxS biggest fan"

Believe or not, some people really believed that Honami hit Tsukasa with a car

tee hee

EASY - Read it all: Did Honami really hit Tsukasa with a car?

Both Aoyagi and Tenma are famous pianists, so his dad aprooved his friendshif with the Tenma's as a way to help him improve on piano

Because his dad approved his friendship with the Tenmas because of piano

He escaped to the Tenma household one time and wanted to stay there

Because he and Tsukasa share a lot of interests, so he stayed there a ton

Hint: They parents share one thing in common

EASY - Read it all: The fandom calls Toya a "Tenma" because he spent a lot of time on the Tenma houseshold for some reason, that reason would be?

Ayumi was Airi's estranged friend whose friendship drifted apart due to lack of communication of both parts, they came back together as seen on Airi's WL card

Hint: First appearence in Friendship Rebuilt and Reappears on Airi's WL card

MEDIUM - Read it all: What is the name of Airi's estranged friend?

Aside from WxS main story, the bunny plushie reappears on the Star if your own story event (Kasa4)

Hint: This charcter appeared on a main story of a group and later on a key event story of the same group

MEDIUM - Read it all: Akina (Kohane's seyuu/VA) also voiced another character on the game story, who is it?

Stated by Kanade herself when talking to Nene, and you can see that almost happening on the n25 episode of Sekai no Game where she plays Ring Fit Adventure (She stops for a minute and goes back because Mizuki called her out)

HInt: It has a clean connection with her character

MEDIUM - Read it all: Why can't Kanade play any games properly?

(Font: Pjsk Wiki) It's seen on Whishing from the blue sky for your happiness that An gets uncharacteristically flustered after accidentally tripping and falling into her arms and soon after thinking to herself that she was "thrilled" to be so close to Shizuku’s beauty. Kohane also describes An as being "cuter" when she's with Shizuku, referring to how shy An becomes when she's "spoiled" by people, especially by people she considers mature and cool. She later says that she solely admires Shizuku (It's okay girl we'll accept you and you know that)

Hint: The character is not from MMJ so no it's not Minori, I know you were already thinking of her

HARD - Read it all: Besides Saitou Ayaka, there is another character of the main cast that was implied to have at least a degree of atraction for Shizuku, who I am talking about?

Only Rui and Kohane can understand fully Emu's language, and also KAITO can understand Emu's language due to his proximity with Miku, that speak the same way as Emu

Hint: If it was not obvious, I'm talking about Emu

HARD - Read it all: There's one character that has their own language, and only other two people can understand it, who are those people

On episode 7 of Step by step they, alongside Saki and Ichika, give matching ballpoint pens to Minori and Haruka, she likes it a lot

Hint: hehe you thought

HARD - Read it all: On Step by step event, due to Minori's doubts about going credit based, Shiho and Kohane buy a little gift to her, what is it?

Mizuki has one sister (Yuuki), Toya has two big brothers (Natsuomi and Shuji), Airi has two big sisters (names not mentioned) and Minori has one one little brother (name not mentioned)

Hint: This is the hardest question on this quiz on my opinion, this is multiple choice, so be careful

EXPERT - Read it all: Aside from the Shinonomes, Hinomoris and Tenmas, select all the characters who also have brothers/sisters

EASY - Stamp collector: Whose sticker has this phrase?: Wonderhoy!

EASY - Stamp collector: Whose sticker has this phrase?: Tee hee⭐

EASY - Stamp collector: Whose sticker has this phrase?: I gotta pratice

MEDIUM - Stamp collector: Whose sticker has this phrase?: Thanx

MEDIUM - Stamp collector: Whose sticker has this phrase?: I said I'm sorry

Two answers because I didn't noticed that Ena had the same stamp, ty @WAITER! MORE YURI PWEASE! on discord

MEDIUM - Stamp collector: Whose sticker has this phrase?: Good for you!

HARD - Stamp collector: Whose sticker has this phrase?: Bye bye!

HARD - Stamp collector: Whose sticker has this phrase?: Noooo

HARD - Stamp collector: Whose sticker has this phrase?: OMG!

EXPERT - Stamp collector: Whose sticker has this phrase?: H-Hello

EASY - In the know: Who said that?: ....Ah.... aaah....

EASY - In the know: Who said that?: Lots and looots of smiles!

EASY - In the know: Who said that?: Miku is so amazing...

Hint: Launch was before 1st anniversary happened

MEDIUM - In the know: Who said that?: I feel sick...

Hint: Launch was between 1st and 2nd anniversary

MEDIUM - In the know: Who said that?: I'll wait until you feel ready to tell me

Hint: Launch was between 1st and 2nd anniversary (It feels like it's missing something...)

MEDIUM - In the know: Who said that?: My name is [...]

Hint: Launch between 2dn and 3rd anniversary

HARD - In the know: Who said that?: I dont trust you...

Card: Emu style? The art of dancing! - 4*

Hint: Launch in the 1st anniversary

HARD - In the know: Who said that?: Waggle-waggle... Like this?

HARD - In the know: Who said that?: Please, dont leave me behind...

EXPERT - In the know: Who said that?: Lets perform on stage together!

Card: What the hanged girl saw

EASY - I love the all!: What is the name of the Gacha of this card?

Card: The confidence you gave me

Card: A lively DJ appears?

Lovely flowers blooming by the water Gacha

Card: The strongest idol smile

MEDIUM - I love the all!: What is the name of the Gacha of this card?

Card: Star piece connection

Card: Painful Honesty

Card: Energetic on location!

HARD - I love the all!: What is the name of the Gacha of this card?

Card: Backstage alchemist

Card: My dancing shoes

Card: Rainy distance

EXPERT - I love the all!: What is the name of the Gacha of this card?

Welcome to the ultimate project sekai quiz, 50 questions, sorted by 5 categories:
3939!: Questions about the songs
Read it all: Questions about the stories
Stamp collector: Guess from who this stamp is just by the text
In the know: Guess who said that phrase (Gacha phrases)
I love them all!: Guess from which set the card on display is

The question will get harder after each one: 
1-3 = Easy
4-6 = Medium
7-9 = Hard
10 = Expert

I hope you enjoy yourself and have fun!