From the ANN article:
The OVA consists of two unaired episodes that will start a two-week theatrical screening run in Japan on March 14, before heading to general retail stores on Blu-ray Disc and DVD on April 25.
The OVA reunites the returning staff and cast. The two OVA episodes are titled “Red Stream Explosion!” and “Nisemono Chūi!” (Beware of Fakes!).