Ryuugajou Nanana no Maizoukin (Nanana Ryuugajou's Treasures) because why not ? Just kidding.

I highly demand a second season for this because there's a lot of things that haven't been explained and a lot of things that needs to be shown. Like, who are all the Great 7 and how was Nanana murdered in that room. And of course, MORE TREASURE HUNTING !!!