There can be the antagonist as well, although not always. In some cases, it could be a rival for the love interest. Maybe another character who also has feelings for the person the protagonist likes and tries to create obstacles for the protagonist. Or it could be a character who represents a negative influence, like a bully at the vacation spot who tries to spoil the fun for the main characters.
In a 'summer vacation visual novel', you may also find the local characters. For instance, if the story is set in a beach town, there could be a friendly beach vendor who gives the main characters advice about the best spots in town. Or an old fisherman who tells them stories about the town's history. There are also often family members like parents or siblings who play important roles in the story, adding family dynamics to the plot.
Typical characters include the beach - bum type. This is someone who is laid - back and loves the summer lifestyle. They might be the love interest for a more uptight character, creating an interesting dynamic. Another character could be the rich kid on vacation. They bring a different perspective and perhaps some class differences into the romance. And of course, the wise old person in the town who has seen it all and gives some sage advice to the young lovers.
I'm not sure specifically as there could be many different 'summer vacation gay visual novels'. Generally, it might be about the experiences, relationships, and adventures of gay characters during the summer vacation in a visual novel format.
There are usually two main characters who are the focus of the romance. One might be a carefree and adventurous type, while the other could be more reserved and cautious.
There are often young protagonists. Maybe a college - aged girl or boy who is spending their summer away from home. They are usually full of hope and dreams.
I don't have specific information about the main characters in this visual novel. They could be typical summer - associated characters like a beach - goer, a summer camp counselor, or a young student on summer vacation.
Without having read or heard about the 'Black Summer Vacation Story', it's impossible to determine the main characters. They could range from tourists visiting a new place during summer, to locals dealing with some sort of crisis during their vacation time. It could also be a story about a person who is trying to find themselves during a difficult summer vacation, so that person would be the main character. However, this is all just guesswork.
I'm not aware of any super - popular ones off the top of my head. There are a vast number of visual novels out there, and it might be a bit niche, so not all are widely known.
There could also be a story about a family vacation in a 'summer vacation visual novel'. The family members might have different personalities and agendas. There could be conflicts within the family, like siblings arguing over what activities to do. But through the course of the vacation, they learn to understand each other better, bond over shared activities like fishing or building sandcastles, and strengthen their family ties.
Ben Tennyson is obviously one of the main characters. His friends like Gwen and Kevin often appear as well. They usually accompany Ben on his summer adventures. Sometimes Grandpa Max also makes an appearance to offer guidance or help out when things get tough.
In many Harry Potter summer vacation fanfictions, Sirius Black is also a character that shows up. Given his relationship with Harry and his status as a wrongly - accused wizard. He could be involved in protecting Harry during the summer or helping him with some secrets about his family. Luna Lovegood might also be included, with her unique perspective on magic and the wizarding world, she could add an interesting element to the summer vacation stories.