#i'm playing colopale at their own game if they're gonna keep up the 1-2 references then i'll 1-up them

[project-sekai-facts]

Tsukasa and Rui are known collectively amongst their classmates as "Oddball 1-2 Finish" (in the JP, KR, and TW servers. The English localisation calls them "Weirdo Wombo Combo"). Due to this, they are frequently asociated with the numbers 1, 2 and any combination or variation of the two (12, 21, etc), both individually and as a duo.

In terms of cover songs, there's Telecaster B-Boy, where they sing the counting part at the beginning. Tsukasa says the number 1, and Rui says the number 2. Tsukasa is Oddball 1, and Rui is Oddball 2.

There's also a lyric in Oki ni Mesu mama sung by Tsukasa, that goes "Waiting for the "1, 2..." signal, holding hands with you is an act of courage for me". Whilst the lyric itself is entirely coincidental, having Tsukasa sing it was very likely intentional. The cover supposedly represents the growth in trust between Tsukasa and Rui, so with that context in mind, one could view the lyric as a reference to Tsukasa reaching out his hand to Rui at the end of the main story, a significant step in the development of their mutual trust.

There's also a few instances of staff releasing content for them on the 21st of a month. Examples include the Fixer 2DMV, which released on September 21st 2023, and their 2022 Summer Memorial illustration releasing on the 21st of August that year. This was also the 12th illustration in that series.

Coincidentally (or maybe not), A Story Where You Are the Star released on the 22nd of November 2023, or 11/22, and featured them both as 4* cards on the accompanying gacha. The event was announced the day prior, on the 21st again.

Rui's 3rd Anniversary Countdown illustration depicted their pillow fight from A Once-In-A-Lifetime Pandemonium!?, an event focused on their relationship, and was released 12 days before the anniversary.

The OST that plays during their Romeo and Juliet rehearsal in KAMIKOU FESTIVAL!, Ma・Ai no Theme ~True Love Song~, was later reused in A Song of Vows for You, Dressed in Pure White and released on the 2nd OST Album alongside the other music from that event. However, instead of being listed with the other tracks from that event on the album, it's listed as track 12.

Them being in class 3-C is a pun based on their status as Oddball 1-2. C is pronounced as "shi" in Japanese, which is the same as how the Japanese word for four is pronounced. Tsukasa and Rui being in class 3-C makes 1 2 3 4. Additionally, 1+2=3, and if you apply A=1, B-2, so on, then this also applies to A (Tsukasa's original class) + B (Rui's original class) =C.

There's also various smaller references, such as the full combo for KING on expert being 1002, Tsukasa growing 1cm and Rui growing 2cm at the 3rd anniversary, as well as Tsukasa telling Rui in the main story that he'll put 12000% into any role Rui gives him. The 12000% quote was also referenced in the 2DMV for their Dappou Rock cover.