Lupin The 3rd part 5 is coming to Toonami. The news is coming through Toonami face book page which is telling us we can see the gentleman thief on June 5th. As for when we don’t know as the time it will air is not mentioned on the day. We should learn more once we get closer to the date to see what time slot Lupin is taking. When that happens I will let you know.
Article:https://comicbook.com/anime/2019/04/23/lupin-the-third-part-5-toonami-adult-swim-anime/
As always thank you for reading.