I won't go into detail but there's quiet a bit of character development not just for him but for the few people around him that kinda mattered but only in the OVA. The story was the best part if not only this OVA but the way they told this story made it almost out shine the regular anime.
Almost all the characters that showed up none being from the main lineup except for Crow were at the least enjoyable especially his I guess you'd call sensei who teaches him quite a lot within the short span.
As far as enjoyment if you liked Deadman Wonderland the anime then watch this its extra story and Pretty cool, but if you read and enjoyed the manga WATCH THIS NOW its a nice look at Crow and his past and very good story.
Overall I give it a 9 out of 10 for me who struggled with the anime because of some bad choices from manga to anime this is one part I absolutely loved and might revisit.
