Maybe some survivors of goblin attacks who decide to join the fight. They could have unique skills or knowledge about the goblins. Another possibility is some sort of magical being that has an interest in the goblin situation, either to help or hinder the Goblin Slayer.
Goblin Slayer manga is indeed ongoing. It continues to captivate readers with its unique plot and character arcs. The creators are committed to bringing more exciting content.
There could be new support characters such as a healer or a mage with unique abilities. These new characters might bring new perspectives to the story. They could also have different relationships with the existing characters like the Goblin Slayer. For example, a new character might be initially skeptical of the Goblin Slayer's extreme methods but later come to understand them.
I'm not sure specifically as there could be many novels with this name or concept. It might be about new beginnings, like a story that unfolds in a new day with new opportunities, challenges, and characters. It could potentially involve elements of adventure, self - discovery, or relationships that start or change during this 'brand new day'.