Delusional Love is one of those stories that just can't quite figure out what it wants to be.
It starts out an ecchi, almost borderline H, story about a beautiful honors student trying her best to seduce her new homeroom teacher. It's sexy and perverted and right when you think that something's about to happen...
The manga turns into a bloody suspense/thriller story.
Both parts of the story are well done. The artwork, in particular, is tremendous: the gore and violence are very well drawn in the second half, as are the breasts and titillation in the first half. But the two parts of
the story don't mesh well, leading to reader whiplash.
Moreover, first half doesn't go far enough down the infidelity path to be a "Fatal Attraction"-style morality tale. Also, he gives her a tragic backstory to make her a sympathetic character, which clashes with the repeated attempts to make her a frighteningly crazy figure.
In short, this manga is sadly less than the sum of its parts. It's not bad, if you like thrillers, but I can't really recommend it to anyone.