This one comes from the seventh episode that you can see below where Megumin teaches the wrong lessons!
We learned back in May 2022 the good news for fans of the Konosuba: An Explosion On This Wonderful World! light novels as an anime adaptation of this prequel were in the works.
With Crunchyroll streaming the series, they’re now doing some new promotion for it with a new clip.
Megumin Joins a Cult | KONOSUBA - An Explosion on This Wonderful World!