Who are the main characters in Chico's love story?
Since we only know it's 'Chico's love story', it's difficult to determine the other main characters precisely. Chico is obviously a key character. There could be a love interest, who might be a strong - willed woman or a gentle man, depending on the nature of the story. Additionally, there could be a rival in love, someone who also has feelings for Chico's love interest and creates some sort of conflict in the story. There may also be some side characters like neighbors or colleagues who add more flavor to the story.
Not having full information about 'Chico's love story', it's a mystery who the main characters are other than Chico. However, thinking about typical love stories, there could be a love interest who has a distinct personality. Maybe she's an artist who brings a different perspective to Chico's life. And then there could be a mentor - like figure, like an old man in the village who has seen a lot of love stories and gives Chico some wise words about love. Also, there might be a group of friends that Chico hangs out with, and they either support or sometimes unknowingly create problems in his love story.
As I don't know the details of 'Chico's love story', I can't say for sure who the main characters are. But surely Chico is one of the main characters. There might be the person he falls in love with, perhaps named something like Maria or Sophia. And there could also be friends or family members of Chico who play important roles in the story, like his best friend who gives him advice on his love life or his mother who has an opinion about his relationship.