I'm not sure specifically as it depends on the particular 'heart problems visual novel'. But it could be a patient who has heart problems as one of the main characters.
In many cases, in a 'heart problems visual novel', the main characters could include the patient, the medical team, and friends or family members. The patient is at the center of the story, dealing with their heart problems. The medical team tries to help them, and the friends and family provide emotional support. For example, the patient might be a young adult, the doctor a middle - aged expert, and the family member a loving mother.
There are usually a few key characters. One might be a young and curious protagonist who is eager to explore the woods. Another could be an older, wiser character who serves as a guide or mentor. There may also be some characters who are native to the woods, like forest spirits or hermits with their own motives and personalities.
Since it's a visual novel, there could be a diverse range of characters. There may be a brave hero or heroine as the main character. There could be villains who are after the Heart of the Universe for their own greedy reasons. And there would probably be some side characters like friends or allies of the main character. They could be from different races or backgrounds, all brought together by the mystery of the Heart of the Universe. For example, there could be a wise old wizard who has some knowledge about the Heart but is reluctant to share it all at once, and a young, headstrong warrior who is eager to protect the Heart without fully understanding its power.
Without having experienced the 'home for the heart visual novel' myself, it's hard to name the exact main characters. But if we think about common trends in visual novels, there could be a relatable lead character, perhaps a young adult. They may be joined by other characters such as a love interest who helps them understand the concept of home on an emotional level. There might also be a character who represents the outside world or the challenges that the main character has to face in their search for a home for the heart.
I don't have specific information about the main characters in this visual novel. But usually, in a story about the human heart, there could be characters like a protagonist who is on a journey of self - discovery, and perhaps a love interest or a mentor figure who helps the protagonist understand their heart better.
There's no way to know exactly without reading it. However, in a story about an amethyst, there could be a character who is a collector of precious stones. This character might be the main character, or it could be a secondary character who sets the story in motion by bringing the amethyst to the attention of the other characters. There could also be a character from a different culture who has a special connection to the amethyst based on their cultural beliefs.
I'm not sure specifically as I haven't read it. But usually, in a visual novel, there are protagonists who drive the story forward. They could be brave adventurers or ordinary people thrust into extraordinary situations in the thorns - filled world.
There's no information at hand about the main characters of 'vengeful heart visual novel'. But thinking about common elements in revenge - based stories, the main character is likely to be someone with a deep - seated grudge. They could be an ordinary person who has been pushed to the edge by some sort of betrayal or harm. Then there could be the person or group responsible for that harm, who would be central to the conflict. There may also be other characters who get involved in the story, such as a wise mentor - like figure who tries to guide the vengeful character towards a more positive path, or a sidekick who helps in the pursuit of revenge, though this sidekick might have different motives and moral compasses.
Since we don't have much information on 'errant heart visual novel', it's hard to say for certain. However, in most visual novels, there are central characters that drive the story forward. There could be a young, confused character with the errant heart at the core. And perhaps there are friends or family members who play important roles in either fueling or trying to fix the errant nature of the heart. There might also be an antagonist who creates obstacles for the main character in their journey to find stability for their heart.
Since I have no prior knowledge of 'heart cage visual novel', it's hard to say. However, it might have a main character who is a young adult. This character could be struggling with some internal conflict that is represented by the heart cage. There may also be an antagonist, someone or something that is contributing to the feeling of being caged. It could be a strict parent, a controlling partner, or an inner demon. And then there would be other characters like a wise mentor or a loyal friend who try to help the main character break free.
The main characters in a 'locked heart visual novel' could vary widely. There might be a young protagonist, perhaps a student or a young professional, who encounters someone with a 'locked heart'. This person with the locked heart could be an artist or a loner. There could also be a mentor - like character who gives the protagonist insights on how to approach the locked - hearted character.