Teachers might also be main characters in some ways. They guide the students, for instance, a very strict but fair teacher who has a big influence on the students' growth. There could also be the class clown type of student who always brings laughter to everyone around.
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.
In School Days anime story, Makoto Ito is a key character. He is a typical high - school boy with hormonal urges. Kotonoha Katsura, a girl with long black hair, is one of the main female characters. She is initially the object of Makoto's affection. Then there's Sekai Saionji, an outgoing and somewhat bold girl. She becomes involved with Makoto in a rather complex way, and their interactions are a big part of the story.
I'm not entirely sure about all the main characters specifically, but there are usually characters like students who are at the center of the story's relationships and events.
Since it's a virtual novel about school days, the main characters might include a typical high - achieving student who is always striving for academic excellence. There could also be a rebellious student who challenges the school rules. And perhaps a kind - hearted teacher who tries to guide the students through their problems. There might be a popular girl or boy who is at the center of the school's social scene as well.
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.
There's Kotonoha Katsura, a sweet and somewhat shy girl. She plays an important role in the story, especially in relation to Makoto. Another main character is Sekai Saionji. She is more outgoing and is also closely connected to Makoto and the events that unfold in the visual novel.
Sasuke could also be a main character. His cool and aloof demeanor would contrast with Naruto's more exuberant personality. There could be a lot of interesting interactions between them, like competing in school competitions or arguing over different ideas in class.
I don't know for sure since I haven't read the novel. But I would expect there to be the devil character as a main one. There might also be some students, teachers or other people in the school environment who interact with the devil.
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'.