This is extremely depressing. Don't read unless you want to be sad. Overall its good, but after getting bamboozled a couple times you can't ever be hopeful in this manga which puts me off.
There isn't a good balance of tragedy, its just keeps on being tragic, stacking on more tragedy, and that shock value decreases dramatically. So much so that you simply won't care much anymore and feel how formulaic it all is.
The draw is that you'll want to see the MC and friends happy, but this is a tragedy too. Tragedy for everyone.