As I don't know the details of 'tuna a love story', I assume the main character is probably the tuna. There might also be other sea creatures involved, like other fish or maybe even a seagull or a dolphin that could play important roles in the story related to the tuna's love story.
One main element is the attraction between the tunas. It could be physical, like their shiny scales or their sleek swimming forms.
Obviously Naruto would be one of the main characters. He could be joined by his friends like Sasuke and Sakura. And of course, the tuna fish would be a central character as well, whether it's a regular tuna fish with a special role or a magical, anthropomorphic tuna fish.
In a tuna love story, the two tunas could face challenges. For example, they might get separated during a strong ocean current. But their love is strong. The male tuna searches everywhere for the female. After a long and arduous journey, he finally finds her, and they are reunited, their love stronger than ever.
Well, without having the actual text of 'tuna a love story', it's difficult to be precise. However, generally speaking, in a love story, there are elements like the characters' feelings, their obstacles, and how they overcome them. In this case, if the tuna is the protagonist, the story could revolve around how the tuna experiences love in its own fishy world. For example, it could be about how it faces challenges from other sea animals or environmental factors while trying to pursue its love interest.
I don't know who is involved as I have no details about the 'Black Tuna Strain Story'. It could be scientists if it's a scientific discovery, or farmers if it's related to an agricultural strain.
Well, without more context, it could be anyone. It might be a young couple from different social classes, like Romeo and Juliet.
Since we don't have much information about the '1960 love story', it's hard to say who the main characters are. They could be ordinary people, like a factory worker and a schoolteacher.
I'm not sure as the title doesn't give away the main characters directly. But it could be a couple who are caught up in the events of 1984 while experiencing love.
I'm not sure as I don't have specific information about this. It could be athletes or people related to the sports world who are central to the love story.
Since I don't know the details of this '1923 love story', I can't say for sure who the main characters are. It could be a young man and a young woman.