The issue is that this team given this is not Mappa's best. Which is basically used for CSM and JJK. With a series that was finished 2 years ago this isn't surprised.
The issue is we got both specials of AoT releasing this year so basically these dudes really being over worked to hell cause you know they gotta make sure AoT finale looks good.
Jigo basically is a case of they are doing just enough where it still can be enjoyable, but you know Mappa can do better. Really the last fight Chobe was in in the main one where you can tell production is hell for the series. Granted the fights you will get to with the each of the mc's were better which you will see.
Imo Jigo is the best of the 3 Dark Shounens manga wise. If Jigo got the proper budget it would be easily an AOTY contender with Vinland, BSD and others.
I def recommend reading the manga its phenomenal easily one of my favorites.