Above the Ashes: Scarlet Order

In 2237 of the lunar calendar, red rainstorms fell continuously for three months, and the continental plate fragmented into seven floating island chains, which was known as "the sky fell" in history. The surviving humans huddled under the steel dome of the floating island, divided into three, six, and nine grades based on genetic purity. Those with high purity controlled energy and genetic medicine, calling themselves the "Chosen Ones"; those with low purity became slaves in the mines, digging for "ember cores" in the radiation dust storm outside the dome - the only energy source to maintain the operation of the dome. Order is established by the "Scarlet Council", and there is only one law: the weak eat the strong, and the fittest survive.