Source material is the Light Novel. It currently on volume 9; anime covers up to volume 4 of the light novel.And while I never watched it (certainly wouldn't mind anyone's own feedback), this apparently marks the end of Season 1 of the anime (2021).
In trying to make some kind of comparison (and it may not have been the best choice, but it's what I could be strong enough in my mind), S1 of Kaguya-sama was also 12 episodes, and uses 37 chapters of content. The difference comes when that season ends having entered the series' 5th volume, while here its gone all the way through 8...
I'm going to try and preemptively state at the start of this that nothing that I write following is meant to seem like I'm trying to be condescending or mean spirited (because difficulties with intonation and tone), but, yes, I am aware. Since manga volume 9 only released in December less than a week before Season 2's final episode.Source material is the Light Novel. It currently on volume 9; anime covers up to volume 4 of the light novel.