This OVA sequel is a really good step-up from the series, they managed to publish it in 1080p, which really makes the video much more "crisper" than 720p. You get the answer to the climax of the series, handful of new characters are introduced and at least for me, there's a lot less "filling" in the OVA than in the original series, which keeps me entertained and made me binge the OVA. Sound, at least for me, got a bit better, but not that much that it would be easy to notice straight away (better quality). Overall, this is what a sequel is supposed to be, and Iwould've like to have more episodes than 3. I'll be on the lookout for the next sequel.