KONOSUBA -God’s blessing on this wonderful world!- Legend of Crimson is now able to be watched on Crunchyroll if you have a subscription. Almost a year ago I spoke about that Megumin the focus of this movie, to read more about what we knew before the movie released click here. For simple sake I also added the trailer Crunchyroll released below.
Over all after watching it I must say that I highly liked it. If you enjoyed Konosuba then it is everything you would expect an large arch of the anime, comparable to the ending archs of the first two seasons of the anime in fact.
You can watch it here