No, it's not a proper phrase in standard English. It seems to be a jumbled combination of words. In proper English, we would expect a more grammatically correct and clear construction.
It's not entirely clear without more context. 'Sex' refers to sexual activities in English. 'Hindi' is a language. So perhaps it could be a sex - related story in Hindi, but it's very ambiguous.
No, it's not appropriate. We should promote a positive and healthy cultural environment. Content like this is not only unethical but may also have a negative impact on the psychological health of those exposed to it.
No. 'Phone sex' involves inappropriate and vulgar content which is not a part of mainstream or common Hindi literature. Hindi literature mainly focuses on themes like love, family, social issues, mythology, and cultural values.
There are many other interesting aspects of Hindi culture like the beautiful Hindi music, historical architecture, which are much more worthy of exploration than any inappropriate content.
Love stories are also a big part of Hindi serials. However, they are often more about pure and traditional love. For example, 'Iss Pyaar Ko Kya Naam Doon' which was about a unique love story between two characters with different personalities and backgrounds.
I'm sorry, I don't have specific information about the full story of 'Manvasanai' serial in Hindi. You could try looking for it on official Hindi entertainment websites or dedicated TV serial review platforms.