[Minor Spoilers]
This manga in the beginning i didn't had much expectations from it. The story was that of a group of friends who kill a man when they were in middle school. That man was the father of our protagonist shintaro and since his father use to beat him daily they decided to kill him and make a pact that they will visit the place where they buried his remains every year. One day the remains gets stolen and a blackmailer puts them through hell. Well in situations like this usually protagonist comes up with some awesome plans but that didn't happened here. All the group were broken and their bonds were tested. But there was a twist that I was not expecting and that's the surprise element of this manga.

Story- I will give it a 7 out of 10, It gets little boring for a while but since its not that long manga i didn't mind that much. But it got a different approach and that mysterious vibe to it. The protagonist actually struggles before he could figure out the entire truth. The story got betrayal, sacrifice, emotions and all other horror elements that should keep the readers entertained.

Art- Its a 5 out of 10. Art in this manga was kinda meh, i mean they would have done it better. Some scenes were drawn good but some lacked the total depth. If only they would have drawn it little better this manga would not have been a little more popular.

Characters- There are 5 people in total, shintaro our MC, tsubaki she is not what she looks like and she likes shintaro, there is akira who is tsubaki's boyfriend you will learn more when u read, Then there is haruka that second girl who always craves for MC but never gets him and in the end there is Ryuu our smart looking guy but he loses his temper easily. As i said earlier their friendship was weird to begin with and most of the character development is done after they kill MC's dad. So unfortunately you will never learn what they were like in their elementary school days or what their families are like and what kind of importance their friendship holds. This one is another bad things of this manga.

This manga deserves more attention and it got the potential. The sacrifices the characters makes to keep their friendship safe and how they shoulder the burden of murdering someone.

In the end i recommend this manga to you if you like reading mystery and psychological stuffs.