PurpleGeth said:
https://twitter.com/to__kage/status/948533506275069952?s=19

6 animators in this sequence but some didn't want to be mentioned so Sakazume didn't credit it.

~10-19s is Iwazawa imo
Yoshihara probably NC on this ep ~23-27s

KamKKF said:
I noticed awhile ago that the sparks in post #23348 resemble the ones at the beginning here, mainly the looping thing that I've never really seen done before. These two shows both have Sakazume/Enokido having a heavy hand in the series so perhaps there's some staff overlap here. Thought I'd comment here before I forget and I dont think I'm up for some sakuga research at the moment.

https://imgur.com/a/nmzgIKT