I Want to Love You Till Your Dying Day manga volume 3 features story and art by Nachi Aono.

Prayers are Sheena's only source of hope and comfort as she watches Mimi head into combat night after night in a senseless war. While the immortal Mimi continues to thrive in battle, the teachers at the orphanage decide it's time for others to sacrifice their lives. The chosen one is the stoic and gallant Seiran who is ready to fight in order to protect the girl she loves. As the war targets more vulnerable victims, will the injustice finally force Sheena to reconsider her love for Mimi?