We can only guess based on the title. The protagonist, who holds the tyrant's heart, is surely one of the main characters. This character might be a strong - willed individual with a complex personality. The tyrant, on the other hand, is likely to be a complex figure as well, perhaps with a troubled past that led to their tyrannical behavior. There could also be a love interest or a rival for the protagonist's attention, which would also be important characters in the story.
I'm not sure specifically as I haven't read it in detail. But generally, it might involve a story where the protagonist has some sort of connection or influence over a tyrant's heart, perhaps in a political or romantic context.
There might also be a wise advisor. This character would be crucial in providing guidance to the tyrant, whether he takes the advice or not. The advisor could have his own motives and secrets, which add more depth to the story and the relationships between the characters.
Since I don't know the specific 'love on hold novel', it's hard to say who the main characters are. However, generally in such a novel, you might expect two main characters who are in love but facing obstacles. One could be a strong - willed person who is determined to overcome the situation that is putting their love on hold, and the other might be more hesitant or dealing with internal conflicts related to the relationship.
Obviously, the woman who gives birth to the child is one of the main characters. She is likely to be the protagonist, going through a series of emotional and physical challenges. The tyrant himself is another main character. His actions and decisions would drive much of the plot, especially regarding the child and the mother.
The main characters are likely the wife who wants to divorce and her tyrant husband. The wife is probably the protagonist who will drive the story forward as she tries to break free from the unhappy marriage. The husband, being the tyrant, will be the source of conflict in the story.
Since I haven't read it, I can't say for sure. But I would assume the villainess and the tyrant are the main characters. There might also be other important characters like the villainess's family members or friends, or some of the tyrant's advisers or enemies.
Not having read the 'hold on to my man novel', it's hard to name the main characters precisely. But we can assume that there is a protagonist, probably a woman, whose main goal is to hold on to her man. There might be a love interest, the man she is trying to hold on to. And then there could be other characters like the man's friends or the woman's family who influence the relationship in one way or another.
Since I haven't read the 'hold back this day novel', I can't tell you who the main characters are.
As I'm not familiar with the 'hold back the day novel', it's difficult to name the main characters. However, they could be a diverse group. There might be a protagonist who is leading the effort to hold back the day, perhaps a young and determined person. There could also be side characters who either support or oppose this main character's quest. Maybe there's an old wise figure who provides guidance, or a villain who is trying to make the day progress in a negative way that the protagonist is trying to prevent.
Since we don't have much information about the 'hold me tight novel', it could have a young couple as the main characters. They could be going through various challenges in their relationship, and the act of 'holding tight' could be their way of dealing with those issues.