The drum fill that you pointed out at 7:19 is perhaps the most used sample in K-pop from the "Bad Royale-Sample Pack" on the royalty free music site Splice. It's prominently in More & More by Twice, It's in the background of K/DA's Pop/Stars, Chung Ha's B-Side Chica, and Several Itzy songs among many others. To be clear this not a statement on the quality of the songs listed (I love all of them tbh), but just a fascinating peak behind the curtain of K-pop production. Unfortunately now, I have cursed to be aware of this sample whenever it is used.
I don't know if you ever watch Dreamcatcher Note/their other behind vids but they got close to Eunbi during Scream era. Ever since she always brings them something every comeback. Yoohyeon mentioned in a live the other day that she brought them fruit