The plot is about some friends who decide to commit suicide but one of them survives, the other can't even find the body, the video is uploaded to the network of which no more trace was left.
This is an action manga, usually you are going to see incredible but credible fights whose drawings are really dynamic, the mangaka is documented enough to make the positions of hands, legs and boxing stances; techniques that are usually used a lot during the fights, you will not see fantastic powers, but rather the result of training and skill of each character which will be demonstrated in the fighting field.
One of the messages that the manga gives is not to give up and go ahead despite all the difficulties that arise, and try to improve both body and mind, and do activities that you would never have been willing to practice, which allowed him to discover the talent that lay hidden, gives as a motive to the main character named Kei to start practicing boxing which ventured into a street fighting system that videos are uploaded to the network, now well when he had relevance turned out to be dangerous to give their real data as some person by the fact of wanting to get the fame of just with him, could even kill him, basically it is an analogy that many people can know you better than you could know yourself, in the manga the plot revolved around fights, so other rivals could study you while you have the disadvantage of not knowing who is on the other side, not unlike how much information you can give out publicly that can somehow be used to harm you, that's what it gave me to understand, another message is that in street fights there are no rules so anyone would leave aside the clean ways to fight and would use anything, from using weapons, to attack in group.
Besides the main reason that was to find his friend, since there was a very good fighter participating in these events who resembled the friend who had committed suicide with him, you must discover what have been each of the fights to finally meet him and discover a great outcome.
If there is something to mention is the growth of the main character, it was something really remarkable that evolution throughout this work, personally to other characters lacked more development and better dialogue as I felt it was quite weak argumentatively.
It was quite entertaining, especially for a day when you have absolutely nothing to do and you are bored, it is a manga to pass the time, unfortunately I will not consider it as something memorable among the action manga I have read, but it is good enough to want to make a review and share it with you.