A weak young man who works in one of the Montagues' mines and is saved from being crushed by Romeo. He and Romeo eventually become friends. Originally sent to the mines for stealing bread for his starving family, he is desperate to return to Neo Verona because his younger brother and sister are still there. Petruchio dies from illness, albeit peacefully, after Romeo promises to give his siblings a ride on his dragon steed, which leaves Romeo visibly distraught. After Montague's death and his self banishment from Neo Verona, Romeo asks Tybalt to find and care for Petruchio's siblings. Petruchio's name is likely a nod to the character from The Taming of the Shrew, one of Shakespeare's early comedies. From wikipedia

In the floating continent of Neo Verona, the Montague family seized control and murdered every member of the Capulet family with the exception of Capulet's daughter, Juliet Fiammata Asto Capulet. 14 years later, Juliet and the remnants of Capulet's retainers live hidden from the iron fist of the Montague family. Juliet has long forgotten the murder of her family or her identity, and cross dresses as Odin and the town's hero of justice, "Red Whirlwind". A sudden escape in her daily escapades leads her to meet Romeo Candorebanto Montague, the kind son of the tyrannical Montague. Destiny has been set as these two individuals soon to be "star-crossed lovers" are cruelly toyed with by fate in the midst of war. Loosely based on the play by William Shakespeare.