After watching the 12 episodes, the OVA makes a break from the usual antics of the gang and refocuses the attention on Kazama's sister. This actually makes for a nice change, as we see the characters outside of the school environment getting up to yet more crazy stuff. I know that some argue that D-frag lacks a clear direction from episode to episode, however I can think of one or two shows where the stories are self contained within each episode. I found this OVA to be a lot of fun and if your a fan of the series, then definitely watch it. The only criticism Ido have is regarding the voices, sometimes the voice actors sounded a little too mature for the characters they were voicing. But as I'm reading the subtitles and not paying much attention to the voices, it really didn't detract from the episode.