Por manhwa typically showcases more diverse and contemporary themes. The art may be more influenced by Korean aesthetics. In terms of story construction, it might focus on certain elements that are not as prominent in other comic forms.
I think 'caricatura del tiempo' might refer to a caricature or illustration related to time. Maybe it's a creative way to represent the concept of time in a humorous or exaggerated way.
Since I haven't read 'The Return' by Edith Tiempo, it's hard to say exactly. However, many works of literature deal with common themes such as love, identity, and the passage of time. It's possible that this story also explores these or related themes. For example, if the story is about a character returning to a place, themes of memory and change might be present. Or if there are relationships between characters, themes of loyalty and betrayal could be involved.
Since 'por amor' implies love, the 'por amor novel' might explore different aspects of love. It could be about unrequited love, where one character loves another but that love is not reciprocated. Or it could be a story of a great love that endures through time and various challenges. It may also deal with themes like family love, friendship that turns into love, or love that changes a person's life completely.