@mo ran if he would have left, he would be under the wing of the administrator, which was the other guy that raped him. So it was not necessarily freedom exactly. Although his obsession with the revenge was clear, and yes , that was the only way to get close to the governor. But let's also consider Yeonjo is not exactly in his right mind in the first chapters, considering how suicidal he was . Also, he thought he would be able to kill him the first night while Hee-ryan was sleeping. So he completely understimated what he was actually agreeing to.
