Well, in such a novel, the main plot could be centered around the prince's struggle. He may be in a society where omegas are treated differently, like having less power or facing more restrictions. So, by hiding his omega identity, he can strive for things like the throne or freedom from arranged matings. Also, there could be a love interest involved, and the prince has to keep his secret from them while falling in love.
I don't know the exact main characters as I haven't read the novel. But surely, the prince is one of the main characters. There may also be some people close to the prince like his servants or guards who might be involved in helping him hide his omega status.
The reason why the Crown Prince hid his strength in " Celebrating Years " was to defeat the Second Prince and obtain the throne. On the surface, the Crown Prince was reckless and unwise. The purpose of acting dumb was to numb the other party and make the other party let down his guard. Furthermore, the Crown Prince's position was already very dangerous. He needed to hide his strength in order to survive in the Imperial Palace. Therefore, the Crown Prince hid his strength in order to gain an advantage in the struggle for power.
Prince Qing Yuannian hid his strength in order to defeat the Second Prince and obtain the throne. On the surface, he appeared reckless and unwise. The purpose of acting dumb was to numb the other party and make the other party lower their guard. The Crown Prince's position was already very dangerous. He needed to hide himself in order to survive in the Imperial Palace. In addition, the Crown Prince's hidden strength was also to balance the strength of himself and the Second Prince, as well as to play a more smooth role in the process of fighting for the throne.
In < Celebrating Years >>, the Crown Prince hid some of his strength. Although he looked like a weak prince on the surface, he actually had deep martial arts cultivation and shrewdness. He was good at using the people around him to achieve his goals, and he often planned all kinds of conspiracies behind the scenes. In addition, at the end of the novel, the Crown Prince also displayed his powerful inner energy and combat skills. He displayed an outstanding performance in the duel with Fan Xian.
The storyline of Hiding in the Moon manga is a blend of mystery and action. The characters face various challenges and the plot keeps evolving in unexpected ways. It's really exciting!