I believe a manga's art style is a very important part of the storytelling itself. If you can't show stunning visuals or at least show some imagery that reflects a deeper emotional insight to the characters than the expository dialogue, there there is no point to a manga. Tsuzuki's art style, though not horrid by any terms, is bland. It's really a dime a dozen how-to-draw-cliché-shoujo-manga handbook. Although I've seen my share of bobble-head looking proportions and huge eyes, that not the problem I have with the art. It's the way Tsuzuki chooses to present the story.
For a serious plot written by Otsuichi there's a lot of parts of this manga which feel like rom-com/sit-com. Take for example, the moment when Aihara tells the other girls she can't sing, there is ridiculous bit of awkward silence which Tsuzuki, captain obvious, writes "Silence" above it thinking that we would not be able to guess that from the absence of dialogue. But what so strange about this choice is that it makes it seems like people really like Aihara and her 'loneliness' is all because she's self-centered. However this is nothing compared to the changes Tsuzuki made to the ending.
Not going into how ridiculously impossible the crash looks in this version, I must say it baffles me why Tsuzuki changed the moment when Aihara finds out that Nozaki is mute. In this version she find a 'Handicap Handbook' that conveniently fell out of his pocket when he was hit. In Kiyohara's version Aihara calls calls him and, in order to save his life, he tells him she hates everything about him eve his voice. By telling him this, if he believed her, he would have turned back and not even be in harm's way, it is only until he drives her into a corner by telling her he can't speak that then she decides to give him the wrong description. She only tells him about the car in one last desperate attempt to stop him from coming because at this point he doesn't know it might cost him his life. He realizes that this girl is not Aihara when he sees she has a cell phone in her hand. But in Tsuzuki's version he realizes because if she calls to warn him that she's at another bus exit and they missed each other, time paradox, or something like that. And then she blurts out about the car and he goes to her aid, thwarting her attempt to distract him by recognizing her keychain. Really, seeing that tiny thing from that far away in a frantic state of mind? And how did he even know she was going to be wearing it or what it even looked like? At least if it was a cell Nozaki would hve to assume it's not her becuase the very thing that connects them is the fact that they don't have one.
In short this manga is not terrible, but calling it good would be pushing it. It's obvious that Kiyohara knew how to handle Otsuichi's story in a much more serious way and really cared for the characters she was given to work with, not only focusing on Aihara's social awkwardness, but also on Nozaki's respective loneliness (as beautifully shown in chapter 0.) That's why it kills me that all of that was left out in Tsuzuki's version
because it make Nozaki's problems less and less important and he seems like his existence was only to save Aihara.
Things like facial expressions and the detailed scenery really make a difference so please, read Kimi ni Shika Kikoenai instead. All and all this version is mediocre.