Honestly I just wish that a new honest girl who is truly interested in the protagonist appears and they date, so he can throw away both the stupid trap and the yandere.
The "new manga" is not a sequel but a new adaptation of the story. The characters work in Japan's Metropolitan Police (even Meishi), Rinna and Meishi have japanese surnames (Rinna is half Irish it seems), and the story revolves around Rinna and Meishi going in a pseudo-lovers relationship so...
What's the point of all that fan-service with the childhood friend if we all know she's been friendzoned from the beginning, nothing else will happen. I would prefer those scenes with the heroine instead.