According to information from the Twitter account tojinomiko Katana Maidens – Tomoshibi anime OVAs have been revealed . The information states that the first part will arrive on October 25th, while the second part will arrive on November 29th.
The animation in the OVAs is based on the Square Enix games .
Finally, the animation is by studio Project No.9 (The Ryuo's Work is Never Done!), directed by Tomohiro Kamitani , with a script by Aoi Akashiro (meme meme).
Check out the trailer for the Katana Maidens – Tomoshibi OVA: