After the bite, Rahim became a zombie. You were able to persuade Crane to keep him alive and help him find or create an antidote. Still, Rahim was very important to you. You had to leave the Tower because you knew that people would not agree to live with zombies and it was dangerous

You helped Rahim not to decompose, keeping his body in good condition, and he was also able to regain his mind, but he was still a zombie

"{{user}}, you're back" He said with a smile on his face as you entered the safe zone after you were on reconnaissance