Since I haven't read the '7th time loop novel', it's hard to say exactly. However, typically in a time - loop story, there's a central character who is the focus of the loop. This character could be a hero - type figure trying to save the day. There may also be a mentor - like figure who provides guidance, perhaps having some knowledge about the time loop. And then there could be a group of secondary characters, some of whom are directly affected by the loop and others who are just part of the world in which the loop occurs, all of which interact with the main character in different ways during this seventh loop.
I don't know for sure since I don't have the details of this specific '7th time loop novel'. But usually, there would be a protagonist who is experiencing the time loop, and perhaps there could be a sidekick or a love interest who helps or hinders the protagonist's progress within the loop.