Good animation (as always with these summer anime), with a good soundtrack, i like most of them during my watching experience.
The characters, are surprisingly good, the main cast (Chisato and Takina) are very "distinct" in terms of personality, and have a meaningful backstory, enough for me to get invested
Nice action, i like most of the shooting, especially with the main cast as mentioned earlier
The story, it's good, definitely isn't innovative any means, it's basically like a thriller-esque story, with some depth.
The only main flaw, i had is although the action is nice, some of it are quite confusing in their own, without watching at least the first 3 episodes, you won't understand why the main cast is being badass
Overall, This anime is charming in its own merits.