The Path of the Ordinary: I Turn My Life Around with a Packet of Rat Poison

No System, no golden finger, no idiots, a slow burn, characters with their wits about them, and sound logic. Updates guaranteed! An ordinary man crawls out of a filthy ditch. He has no spiritual roots, no connections, only a reasonably clear head. He survives by reading people and wins through careful scheming. The old generation's blood stains the mud, while new roots burrow into the earth. In this life, all he wants is to secure a future for eighty beggars.