No, they're not the same. Manga is a broad term for Japanese comics, covering various genres and themes. Hentai, on the other hand, specifically refers to pornographic or sexually explicit manga.
Sure, Yaoi manga is very real. It typically focuses on romantic and sexual relationships between male characters. These mangas are created and consumed by many people around the world.
It depends on the laws and regulations of the specific country or region. In some places, hentai content may be restricted or outright forbidden, especially if it involves extreme or illegal themes.
In these types of manga, a mother's love can be presented in unconventional and sometimes disturbing forms. It might involve elements that are far from typical expressions of maternal affection, often for shock value or to explore taboo themes.
Yes, there are some manga that might be on the edge of being too suggestive but still have great stories. For example, 'Monster' by Naoki Urasawa. It has complex characters and a thrilling plot that keeps you engaged, without any hentai elements. It delves deep into the human psyche and moral dilemmas.