Well, the main character is surely the 'ugly girl' herself. We don't know her name yet, but she is the one whose thoughts and experiences are being recorded in the diary.
There might be some other characters like her family members. Maybe she has a mother or a father who play important roles in her life, either by supporting her or by being part of the reason she feels self - conscious about her looks. For example, if her parents are always comparing her to more conventionally attractive people.
Also, there could be friends or classmates. In a school or social setting, her peers would have a big impact on her. Some of them might bully her because of her appearance, while others could become her friends and help her see her true worth beyond her looks. So these friends or classmates could be important characters in the novel.
Obviously, the 'ugly girl' herself would be a main character. She is the center of the story and the one whose diary we are presumably reading.
The main theme might be about self - acceptance. The 'ugly girl' in the title could imply that the protagonist struggles with her appearance and through the diary, she might be on a journey to accept herself as she is.
The main character is likely the girl described as having a big mouth and being ugly. There could be other important characters such as her family members. Maybe her parents play a role in how she views herself, whether they are supportive or add to the pressure she feels because of her appearance. There could also be a teacher or a mentor figure who helps her realize her worth.
I'm not sure as I haven't read it specifically. But usually in a novel like this, there might be a character who is the focal point of the 'ugliness' concept, perhaps someone who is ostracized because of their appearance or actions.
Anne Frank is of course the most important character. She is the one writing the diary and through her eyes we see the whole story. Her father Otto Frank is also important. He is a source of support and stability in the family. Then there is her mother, Edith Frank, whose relationship with Anne is complex and adds depth to the story.
I'm not entirely sure without reading it, but usually, in a love - centered novel, there would be the two people involved in the relationship as main characters.
Since I don't have the details of the 'ugly love novel', it's hard to say exactly. However, it's likely that there are characters whose relationships form the core of the story. There could be a protagonist who is searching for love or dealing with a difficult love situation, and then there might be other characters like friends or family members who influence their view on love and relationships.
Since I don't know the specific 'diary visual novel', I can't say for sure. But it could be the person writing the diary as the main character, along with people in their life like friends, family, or a love interest.
The main character is a journalist.
Well, it could be about the daily struggles and insecurities of the so - called 'ugly girl' in the story. Maybe she's trying to find her place in a world that values beauty a great deal.