Well, without having read the actual 'only with your heart novel', it's hard to be certain. However, it might be centered around the concept of authenticity. Maybe the story shows how characters can truly experience life and connect with others only when they are true to their hearts, not just following external rules or expectations.
The main theme could be about love and betrayal. In many novels with a title like this, it often delves into the complex emotions that come with a cheating heart, such as guilt, jealousy, and the breakdown of relationships.
I'm not sure as I haven't read it. But it could be about self - discovery. Many novels with 'heart' in the title deal with characters finding out more about themselves.
Well, 'ablaze fanfic' could be a fan - created fictional work that has the theme of being 'ablaze' which might refer to something being on fire in a literal or metaphorical sense. It could be related to a particular fandom where the story is set in a world that is in chaos or upheaval, like a city ablaze during a war or a magical realm where some dark force has set everything ablaze.
Not having read the 'give me your heart novel', I can only speculate. The title makes me think that the main theme could be centered around trust. When one gives their heart, it could mean trusting someone completely. It could be a story that explores how characters build, break, or regain trust in each other.
It's a romantic and adventurous comic. The story follows the journey of two characters who find love in unexpected circumstances and face various challenges along the way.