Who are the main characters in 'little witch visual novel'?

Well, without more information it's hard to say precisely. However, based on the title, the witch is almost certain to be a central figure. There could be a gardener character who helps the witch tend to the garden, or perhaps a rival witch who causes trouble. There might also be a spirit of the garden that has a major role in the story, as it is set in the garden which is likely to be a character in its own right in the context of the visual novel.

I'm not sure who the main characters are exactly. Maybe there's a witch as a main character.

Probably the little witch herself. And maybe there's a wise old witch who guides her.

There's also Lotte. She is Akko's friend and is good at potions and magic related to plants. She is often there to help Akko out with her studies.

The main character is surely the little witch herself. There might also be her pet, perhaps a black cat that accompanies her everywhere.

In 'little witch nobeta story', the main character is Nobeta. However, it's likely that there are other characters as well. For example, there could be an old wizard who gives her advice at some point, or a group of friendly fairies that she befriends. These characters would play important roles in Nobeta's journey, whether it's by providing help, creating obstacles, or just being part of the rich magical world she inhabits.

The main character is likely the little witch herself. There may also be her familiar, perhaps a cat or a bird that helps her in her magical doings around the house.

Akko is the main character. She is a determined girl who wants to be a great witch. There's also Lotte, who is Akko's friend. Sucy is another important character, known for her somewhat spooky and unique magic. And then there's Professor Ursula, who has her own secrets and plays an important role in guiding the students.

The main characters would be the witches themselves. Each witch in these stories likely has her own distinct personality, motives, and powers.

There are several main characters. Besides Riki Naoe, there's Kyousuke Natsume who plays an important role in leading the group. Also, Rin Natsume is a notable character with her own unique personality and story within the visual novel.