Fernsong and Ivypool became mates in the "A Vision of Shadows" arc. Fernsong demonstrated his support and devotion to Ivypool by volunteering to stay in the nursery with their kits after they were weaned, a task that Ivypool was hesitant about when they were discussing about starting a family together. They grieved together over their daughter Bristlefrost's death, seeking solace in each other when she was gone forever.