This review might contain spoilers for the manga - - - Story First of all, this is not just an adaptation, it is a sequel to the anime, so please watch the anime before you read the manga.
The setting more or less is the same as most other cases in ID:Invaded. Sakaido is in another serial killer's well and has nostalgia, but this time it's a car with its brakes dead; driving on a highway with other cars also with dead brakes. And he has to find out what is going and solve the case. The story has some crazy plot twists and even includes Kaeru herself playing a role in the story.
The story is written very well by Outarou Maijou and gives us a very good glimpse into further cases that our beloved cast of psychopath serial killers might meet down the line if they ever continue this series. If you liked the anime's storytelling then you'll love the manga as well. It does leave on kind of a cliffhanger though and we do not have a further sequel to the story so... - - -Art The art is beautiful, done by Yuuki Kodama of Blood Lad (highly recommend that manga too btw), the art is true to the anime's art style and adapts it extremely faithfully while adding subtle nuances of author's own style in there which makes it very visually appealing. And the author knows exactly how to draw your attention with good panel placements. - - -Character Probably the one where it lacks the most (but not really). The characters are still good, we also see parts of Sakaido's personality cracking at a certain point which is very interesting to see since he is usually such a calm composed character. We also see him be the gentle respectful senpai that we have come to experience over the anime with Hondomachi.

Hondomachi has gotten much better, and she gets a lot of character development on top of the anime's character development. But she is still a rookie when it comes to the Mizuhanome system and her own "death".
We also get to see Inami as one of the pilots for once, which is interesting although she doesn't get a lot of screentime.
The other characters are as you have come to expect from the series, they're good supporting characters but a lot of them don't get a lot of development apart from what they got in the anime. But that's expected since this only has 14 chapters.
Also I miss my boy Fukuda. - - -Enjoyment If you enjoyed the anime, you'll definitely enjoy this manga sequel. It has everything that made the anime so good, and it adds subtle author nuances that make it even more fun and entertaining to read through. The mystery is still good, the serial killers are still great and super smart, and they're still challenging our serial killer protagonists to catch them inside their Id wells. - - -Overall It is a good sequel to an already excellent story, and hopefully they continue the manga to finish it in the future.