According to Jump Square magazine, To LOVE-Ru Darkness was announced to be aired from this October. An OVA is scheduled to be released in August. To Love-ru anime official website To Love-ru Darkness OVA official website Source: Scan of Jump SQ

According to the cover note of the 24th volume, manga "Usogui" was announced to get an OVA adaptation. It will be released in Autumn. Usogui Vomic official website Source: Scan of the cover Usogui on MAL