Review of Hand Shakers
So Hand Shakers is a little weird at first (framerate being slightly higher and variable rather than constant) which may make some people steer away from it. Most the time the artwork is fine. Supposed spoilers (theories) near end of post I do have to complain about the chains moving from the first episode as it causes brutal screen tearing. Other than that it's art style for characters is pretty nice to look at. Opening -- Song isn't bad, maybe a little pacy and lots of high motion. Normal Animation -- Usually not bad some parts of the first episode were a little laggy. Ending -- Song is another neutralthing but animation really isn't a big deal there due to lower key music tone.
How is the music in the background, well it complements it quite well the fighting sequences usually have more upbeat music in the background.
Now that I have finished watching the series, the story is definitely different, though the end leaves on a cliffhanger of meeting God?
Maybe an OVA (Supposed Episode 13 "Go ago Go") which is apparently a prequel seems to be focused on pre story stuff. Though this new character in it who is apparently called KÅichi from my research. This new character looks similar to that guy who was seen at the last seconds of Episode 12. I don't think a 20min OVA will cover the stuff after as well.
Welp time to go back waiting for Index III or the next season of Railgun