Inga Nikki

*Disclaimer*
Just personal scratch.
Advised, possible spoilers.
Opinion & Informal

Art: 4/10
Low effort. Something a gradeschooler could do. Anatomy and proportions not applicable. No impact sequences, environmentals, or art showcases.

Animation: 4/10
Minimal motion, low frames, bland effects.
...
Characters: 5/10
The cast from the main series. Nothing added in terms of character development.

Plot: 4/10
A formality. Exists just because they had to pump out some sort of specials in my opinion.

Development: 4/10
Adds nothing to the plot or their world.

Music: 5/10
Same soundboard. No sound design. Same bgm from main series.

Overall: 4/10
Not worth watching. Uninteresting topics and dialogue.