Since I haven't had the chance to read this novel, I can't name the main characters. However, in most novels, the main characters are the ones whose perspectives we follow the most. They are likely to be involved in the central plot, which might be related to the 'kiseki' in some way, and they are probably the ones who have the most significant relationships with other characters in the story.
I don't know the main characters in 'kiseki dear to me novel' as I haven't read it. But usually, the main characters are the ones who drive the story forward, so they could be characters with strong personalities or those with important goals in the context of the story.
Not having read the 'kiseki dear to me novel', it's impossible to accurately name the main characters. But if we think about common patterns in novels, the main characters could be those who experience the most change throughout the story. They might be at the heart of the mystery or the special event that the 'kiseki' represents. Maybe there are characters who are on a quest related to the 'dear to me' aspect, and they would be the main focus of the narrative.