I had already written a review for the main Master Keaton series before, and now that I've watched the OVA, I felt like I had to talk about it too. Surprisingly, I actually enjoyed the OVA even more than the main series. It felt more diverse in terms of stories and themes, and I found myself way more excited while watching it.
One thing that really stood out to me was the music, it was so well done and added a lot to the atmosphere. Also, there's a quote from the grandfather that really stuck with me: "Bad dogs hurt good dogs, just like humans do." Simple, but deep. Definitely one of those lines that stays with you.