I'm not sure specifically as there could be many things named 'mad dog side story'. It might be about a character nicknamed 'Mad Dog' and his adventures or side events that are not part of the main story. Without more context, it's hard to say exactly.
The mad dog in the novel could symbolize inner turmoil or primal instincts. It might stand for the characters' repressed emotions or the lurking danger that they have to confront.
The'mad dog' might symbolize inner demons or primal instincts. It could be a metaphor for the characters' repressed emotions or urges that threaten to break free. Also, it could represent an external threat that the characters have to overcome to grow and evolve.
Since I don't have much information about 'mad dog side story', I can't say for sure who the main characters are. But it's likely that there's a character associated with the'mad dog' in some way, maybe the owner of the dog if it's really about an actual dog, or the person who is called 'mad dog' if it's a human - centric story.
I haven't actually read this novel in detail. But generally, in such a plot, it might involve a transformation of a character's personality from being wild and unruly like a'mad dog' to a refined and noble 'young master'. This could be due to various reasons, such as a change in his living environment, meeting someone special who influences him, or going through some life - changing events.
One possible theme could be redemption. Transforming a 'mad dog' - like character into a genteel lord implies that the character is being redeemed from their former, less desirable state.
Well, thinking about it, the main character, the one being transformed, is likely to be complex. He may have a rough exterior but deep down has some good qualities waiting to be uncovered. There might be a female lead as well. She could be the one who first sees the potential in him to become a young master. Maybe she comes from a more refined background and her presence and influence gradually start to change him. And then there are probably side characters, like his friends from his'mad dog' days who either support or resist his new path.
They might be really surprised. Some characters could be amused by the creative scenarios fans come up with. For example, Hinata might be excited to see himself in all kinds of wild adventures in the fanfictions.
I have no definite answer. Sometimes manga series end when the story feels complete to the creator or when publishing circumstances change. So, we'll just have to wait and see.