It is completely inappropriate. Erotic content has no place in proper literature or general consumption. It objectifies and disrespects others, and can have a negative impact on one's mental state and values. We should stay away from such materials.
They are not common. Literature usually gravitates towards topics that have broader appeal. Hypnotized little sister stories are rather niche. While there might be some short stories or even parts of novels where hypnosis is involved, it's not a typical plot device when it comes to a little sister character. It might be more likely to find in some experimental or indie literature pieces.
No. Hypnotized erotic stories are not appropriate in mainstream literature as they often contain sexual content which goes against the moral and ethical standards of a general audience. Mainstream literature is expected to be accessible to a wide range of people, including minors, and such stories would be considered inappropriate for this broad readership.
Sure. Once there were two sisters. The older sister was very good at painting. She decided to teach her younger sister how to paint. They set up their easels in the garden. The younger sister was a bit clumsy at first, but with the patient guidance of the older sister, she gradually got the hang of it. They painted the beautiful flowers and the blue sky, and that day was filled with laughter and the joy of sisterly bonding.
No, they are not a popular genre. This type of story combines elements that are not mainstream. Erotic content is often restricted in many forms of media, and the combination with investigative reporting and hypnosis makes it an extremely niche concept that is not widely known or consumed.
There could be a story where a little sister is hypnotized by accident. For example, she watches a strange, swirling pattern on an old TV screen that has some sort of hypnotic effect. As a result, she starts acting in a very different way. She might start speaking in a language she doesn't know or be able to do amazing physical feats like balance on one foot for a really long time. But then her older brother or sister has to figure out how to snap her out of it.
I'm not aware of any specific 'erotic investigative reporter hypnotized stories' as this seems like a rather niche and perhaps not very common type of story. It could potentially involve an investigative reporter being hypnotized during an assignment related to something in the erotic realm, but without more context, it's hard to give concrete examples.
No, it is not appropriate. Such content often involves objectifying and sexualizing others in a non - consensual or inappropriate way, which goes against ethical and moral standards.