According to Gangan Online, the online manga website which publishes the manga "Watashi ga Motenai no wa Dou Kangaetemo Omaera ga Warui!
", a special edition of the manga's volume 7 will have an OVA bundled. It will be published on October 22, 2014 and preorders are being accepted now. The OVA will be the 13th episode to the ongoing TV anime series
that is adapted from the manga. So far, 4 volumes of the manga have been published and volume 5 will be out on September 21st.
Source: Gaga Online
Watashi ga Motenai no wa Dou Kangaetemo Omaera ga Warui! OVA