Sure! Crunchyroll mobile has a manga section where you can read various titles. However, the availability might depend on your subscription plan and region.
The Mobile Suit Gundam manga was indeed the original. It provided the foundation for the subsequent anime series. The anime drew inspiration and storylines from the manga, with some adaptations and expansions to suit the animation medium.
The Fox Demon Little Matchmaker manga could be read online through mobile phones. The specific online reading platform or website was not mentioned, so more detailed information could not be provided.