In the 10th chapter of the main story, the Apostle is finally defeated and stopped by our hero and his team. After that, our hero rushes forward and kisses the Apostle, to bring back the original Ith, and he declares his love for her. He also wanted to make love to her to stop the corruption in her body.
Ith was very happy with this, but the corruption in her body spread further because of Rosalie, the evil scientist. Our hero said that if he can spend the last moments of his life with Ith, he would die a happy man. Ith really loved his dedication. So, they make love inside an abandoned building. It was a life or death situation. An emotional moment.