I don't have information on the specific main characters in this visual novel as it's not a widely known one to me. It could be a young person who is on a journey to discover their family's past through the letters.
Perhaps there's an old man or woman who has kept these letter memory fragments and is now sharing the story with a younger generation. There might also be a character who is trying to solve a mystery related to the letters, like a detective - like figure.
It could be a story where the memory fragments are presented in the form of letters. Maybe the protagonist is trying to piece together their past by deciphering these letters. It might involve different characters and their relationships which are revealed through these letter - based memory fragments.
Since I'm not familiar with this visual novel, it's hard to say who the main characters are. But in general, in a visual novel that focuses on letters, there might be a sender and a receiver of the letters as main characters. Maybe a young writer who sends out letters seeking adventure and an older, wiser person who receives them and offers advice.
Since the title mentions Isabella, she is most likely one of the main characters. But without reading it, it's hard to say who else might be a main character. There could be a friend or a love interest of Isabella.
I'm not sure who the main characters are in 'johannes the letter visual novel' since I haven't played or read it. But it's safe to assume that Johannes is one of the main characters, given the title. There may also be other characters like friends, family members, or antagonists that interact with Johannes throughout the story.
There could be an old hermit - type character who has some knowledge about the letter's origin. The main characters might seek his help to understand what's going on. Additionally, there could be a villainous character who is somehow related to the letter and is causing all the horror, perhaps a long - lost relative of someone in the story who has a grudge and is using the letter as a tool for revenge.
I don't know as I haven't read it. There could be a character who discovers the letter ghost, perhaps a young person who is curious and brave.
The protagonist is one of the main characters. And of course, his pen - pal whose mystery he is trying to solve. There are also other characters in the town where he goes to investigate, but the specific details about them can be discovered as you play through the visual novel.
I don't have information about the main characters in 'memory's dogma visual novel' as it's not a widely known work to me.
I don't know as I haven't read it, so I can't name the main characters.