Reading licensed manga on Mangahere is usually not allowed. Licensed manga is protected by copyright laws. You should look for legitimate services or platforms that have the rights to offer them for reading.
A 'cc0 visual novel' is a visual novel that comes with a very special license - CC0. The CC0 license is a powerful tool in the creative world. For visual novels, this means that the developers are giving up their rights to the work. It could be for various reasons. Maybe they want to contribute to the community in a big way, or they believe that their work could be improved and expanded upon by others. As a result, anyone can take the elements of this visual novel - be it the plot, the characters, or the overall design - and use them in their own projects. This can lead to a lot of new and exciting derivative works based on the original CC0 visual novel.
Adding CC to a story isn't too complicated. You could start by writing out what you want the captions to say. After that, find a platform or app that supports caption addition. Make sure to sync the captions with the relevant parts of the story for a seamless experience.
CC also changes. She was always a bit of an enigma, but with a baby, she becomes more open and caring. She uses her immortality and knowledge to protect the family. In one story, she teaches the baby about the history of the world they live in, showing her newfound maternal side.
One possible plot could be that CC, with her unique powers and connection to Lelouch, helps him in his grand plans. As she loves him as her master, she might be constantly by his side, using her powers to deceive their enemies or gain valuable information. They could face many challenges together, with CC's love for Lelouch being a driving force in their relationship and their journey to change the world.
The 'fantasti cc' part is rather unclear without more context. It could potentially refer to something fantastical or creative within the context of the 'little sister' related stories. Maybe it's a special code or term for a particular type of story element like magic or extraordinary events.