I have to say that this story is epitome of average to me. It's not bad, but it's not good either. If it weren't for how short it was, I would've dropped it, and there was a part of me hoping it would redeem itself.
It was just embarrassingly predictable. I already knew hoe things would end because they followed the same manga formula that other manga of the same genre use. It didn't bring anything new or interesting. A story about a really strong girl fighting for justice and then a love triangle it's just not that special. Sure it's a good premise for a guilty pleasure, but even then this story remains forgettable because of how lacking in personality it is.
Then there's the ending which doesn't feel like an ending at all for the manga. It's great for the first arc of the story, but it doesn't resolve anything that the manga discusses. The romance is left hanging, and she already has a resolution a few chapters before, therefore making this ending feel forced. And I am leinant to endings. I like endings even if some find them unsatisfying or unlikeable as long as it feels like a grand resolution. I just don't think the ending was strong enough to close the story.