For the Series of the Meta, we make flip flop between Sonic and DELTARUNE so before we change it, let's explain what makes a series the meta.
If at least 4/6 members of AC are into the game/series, and it's not horror related, it'll pass STEP 1 of being a SotM. The only requirement left is to include fan characters and be in interest for at least a month. However, DELTARUNE gets a pass on the time frame one due to 1/2 of the members making a fan character for this series.
However, Pail's story is also being rewritten.