Grooming romance novels usually involved the interaction between a young girl and an older man. In this process, the girl gradually matured into an independent, confident and attractive woman, while the man played a role of guidance, support and encouragement in this process. This kind of novel often involved emotions, kinship, friendship, and other aspects of the plot to let the readers feel the warmth and touching of human nature.
In this type of novel, it was more common for the woman to be older than the man because the woman was more likely to show her inner weakness and helplessness and needed the protection and care of the man. At the same time, men could also gain a lot of inspiration and help from the experience and wisdom of older women, so as to grow and develop better.
Growth-seeking romance novels are a type of novel that is full of emotion and imagination. The readers can feel the warmth and touching of human nature from it, and they can also understand the interactions and growth process of different characters.
Another characteristic of manga in general is the variety of genres. There are action - filled shonen manga like 'Dragon Ball', there are also heart - warming slice - of - life manga like 'Yotsuba&!'. Manga caters to a wide range of interests and audiences.
In general, adult manga is known as 'ero manga' or 'sexy manga'. But the most common term used is hentai, which specifically focuses on adult-oriented content.
Adult manga usually contains mature content like explicit sexual themes or violence that isn't suitable for younger audiences. Regular manga can cover a wide range of genres without such intense adult content.
I wouldn't recommend seeking adult manga. It's often against the law and not morally correct. However, if you really want to, you might find some on certain unregulated online platforms, but remember, this comes with risks.