The main characters in '100 days of love story' are a mystery. It could be a student and a tutor who fall in love during the course of 100 days. Or it could be two travelers who meet on a journey and experience a short - term but intense love story within those 100 days.
Since we don't know the specific '14 days love story', the main characters could be diverse. It might be a couple from different backgrounds, like one is from a rich family and the other from a poor one. They could be named something simple like Jack and Rose, or they could have more unique names. The important thing is that they are the ones whose love story unfolds over the 14 days.
In some School Days Love Stories, there could be a teacher or a school staff member who influences the relationship in some way, either by providing guidance or by creating some rules that the couple has to work around.
Since I'm not familiar with 'fifteen days love story', I can't tell you the main characters. But usually in a love story, there are at least two main characters, probably a male and a female. They could be from different backgrounds, which might add more depth and conflict to the story.
The main characters are Tom and Summer.
I'm not familiar with the '91 days story' specifically, so I can't name the main characters. However, they might be individuals with different personalities and goals. There could be a protagonist who drives the story forward, and perhaps some supporting characters like friends, family, or colleagues who interact with the main character during the 91 days.
There are several main characters in the '19 days story'. For example, Jian Yi and Zhan Zheng Xi are among the important ones.
In 'Kagerou Days Story', one of the main characters is Shintaro. He is a NEET type of character at the start but his life changes drastically. Kido is another key character. She is strong - willed and her power is significant in the group. Kano is a rather mysterious character. His actions and true nature are slowly revealed throughout the story. And Marry, she has a unique connection to the strange events in the story. All these characters together create the rich tapestry of the 'Kagerou Days Story'.
I don't know the main characters in the 'nero days story' without more information.
I'm sorry I don't know the exact main characters in it. But usually in a sequel, the main characters from the first part would likely still be central, like the hero and the heroine if it's a love - based story.
Without reading the '365 days sequel story', it's difficult to say who the main characters are. But if it's a sequel, chances are it will feature the main characters from the previous story, perhaps with some new characters added to spice things up.