Finally gave this a try and I gotta say this is a very fun manga to follow, but at the same time, it's very frustrating. The sudden appearance of the villainous duo didn't help with that and completely shifted the premise of the whole deal, and I won't lie, I don't much like it.
I thought it would be about becoming a better person or some corny stuff like that with the "seeing death" part being both the pull-in as well as the "igniter" for all that to happen.
I don't mind the over-the-top reasoning for the prez duo to be the way they are, as someone mentioned a few times, this manga is pretty bonkers in its own way, so it's fitting. I also understand why such character(s) exists in a story like this. To show a "what if" scenario, a mirrored version of what you could do with such stuff. I'm not sure how seeing dead bodies help you kill people and get away with it but... I mean, sure.
The issue I have with it is that it stuck for too long and it seems like it's becoming some kind of an ongoing thing. Like the manga shifts towards some odd death-note territory. And if that's the goal here to change into that kind of thing, no amount of cute moments between Satsuki and Akira will save it.