The website for the Saredo Tsumibito wa Ryū to Odoru: Dances with the Dragons anime has posted that the anime which was slated to premier on October 5th will be delayed till April 2018. The original preview video has also been reposted with the updated premier date. The link to the website can be found here.
The story revolves around “jushiki” (lit. spell equations), the equations that govern the quantum constant “h” of action, change the laws of physics at the local scale, give birth to TNT explosives and poison gas, and cause incredible physical phenomena such as plasma and nuclear fusion. Two “jushikishi” (spell equationists) who use jushiki in battle are Gayus (who deals with bad luck with tact) and the beautiful but cruel sword-wielder Gigina. These two bounty hunters are caught up in a battle with dragons in the city of Eridana and in the intrigue of great nations.