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Synopsis:
Konno has lived her life with indifference to and acceptance of the way things work in both society and school. But when her school bus has an accident, leaving her one of five survivors trapped by a cliff, the situation forces her to learn many lessons about herself and others.
Official Japanese Website

I was recommended to read this manga by a website, and since then i been hooked.
The story is fascinating as it deals with a group of students who survive a bus accident, while it not only deals with the survivors trying survive while waiting for rescue, it also shows their terrible and sometime ugly true self to each other, where some turn into something they aren't and others showing their real self they been hiding from their friends. Yet it also show some peoples willingness to forgive and make amends and try their best to make of their situation. All and all, it's a great manga i recommend you to read.

PS:For those wondering about the Shojo part.