Reincarnated as a rodent!WTF!!!

Vice betrayed by his friend's, used as pawn to escape the jaws of an SSS-Rank monster. Then life decides to give him a second chance but this chance is not a reward, it's punishment. He now lives the rest his days as a rodent, the only thing that drives him is vengeance at all cost he'll have it, even if he must face the whole world to have it. — Description from novelcodex.org