Look, some of the supernatural and investigatory parts still don't make a ton of logical sense, but I don't care, because I enjoyed this very much. And it's oddly funny, considering the subject matter?
The investigation gets wrapped up fairly quickly, once they identify another person of interest / potentially a second victim, and follow those threads to the culprit. I liked how we do see the importance of the partnership between Asako and Kuroiwa, and how they fill in each other's gaps.
Asako feels useless because he's not really doing any actual detective work, nor are his visions permissible in court. But Kuroiwa points out that he wouldn't even know where to begin if Asako wasn't guiding him in the right direction. It's his role to take what Asako tells him about the crime scene and the victim's memories, then to piece together something that can lead to an arrest and effective prosecution. They both fulfill important roles, and they truly need each other.
I also liked the gradual development of Kuroiwa's feelings. They do feel natural to me, although near the end, I did sort of expect a conversation about whether Asako was projecting Kuroiwa's ex-wife's feelings onto him. Kuroiwa is clear that he isn't seeing Asako as a replacement for his first love - he's a second and equally important love - but if they are going to have a conversation about Asako's sex dreams, they'd want to clear up those bits.
The resolution of their workplace dynamic was funny, too, and surprisingly well-handled. Kuroiwa was entirely honest...a bit too honest...with his boss, who sat with all the information before making his decision about whether to approve Kuroiwa's transfer request. And it was a good solution. When he asked for the request, I was thinking...okay, but how can he abandon Asako like that? No one else is going to be able to handle his visions and his hospital stays and everything that goes into having a supernatural partner.
Which, ultimately, is what the higher-up decision was as well. Traditional rules about dating one's coworker don't matter all that much in a ridiculously unusual situation such as this. It's important to maintain their partnership, and it doesn't particularly matter what the two of them do at home.
A bit fast-paced at the end, but sweet and funny and affectionate despite all that. I definitely wouldn't mind reading more of Takahashi's BL. It's a bit strange but very funny and heartwarming even with all the blood. And I ended up really loving the art.