Demonic Instincts

When Astaroth comes to take Rin back to Gehenna, what would happen if Fujimoto didn't save him? How will Rin survive in Gehenna? Will he rough it out and come back to his family alive? Or submit to his Father and do as he says without a second thought? And what will happen when Rin DOES return to Assiah? Rated T for swear words and mild gore. (Being Re-Written. Check Last Chapter)