It has a standard battle royale premise, with some interesting powers thrown into the mix, so at first Instant Bullet seems like a promising read. You couldn't be further away from the truth.
The author doesn't take long to throw all his edgyness into the pages when it is mostly uncalled for. The plot moves in the most cliché and lazy way possible, and romance happens without prior development whatsoever.
This would already make for a really bad read, but it doesn't end here: Forgetting plot-points established in the prologue, a complete disregard for character development and an overall "fuck you" to the reader.
Yes, this manga got axed, so the ending can be excused. But taking all the issues prior to this into account, thank god it got terminated.