Probably 'The Silver Mistress' as well. It has a great story that shows different aspects of Modesty Blaise's character. It's not just about the action, but also about her relationships and how she deals with moral and ethical situations in her dangerous world.
He might be suspicious at first. Given their different houses and the general tensions between Slytherin and Gryffindor, Harry would be cautious about Blaise's motives.
Maybe Blaise sees something special in Harry. In fanfiction, it could be that Blaise admires Harry's courage or his unique abilities. He might feel a sense of kinship with Harry despite their differences.
Their parents could be main characters. Blaise's mother, who might be a proud Slytherin - influenced witch, and Hermione's parents, who are Muggles but have a unique connection to the wizarding world through Hermione. Their interactions could add a lot of depth to the story.
Draco might be more of a show - off. He comes from a wealthy family, so he could use expensive gifts and grand gestures to court Harry. For example, taking Harry on a broomstick ride over the most beautiful parts of the wizarding world on a top - of - the - line broom. Blaise, on the other hand, could be more low - key. He might use his intelligence to have deep conversations with Harry, sharing secrets of magic that not many know.
Perhaps it's a warning. There might be some danger approaching Harry, and Blaise, having come across this information, decides to inform him. For example, if there's a new dark wizard in the school or some sort of plot against Harry that Blaise has uncovered.
Maybe in a social setting where there are rumors or false accusations against Harry. Blaise takes it upon himself to investigate and clear Harry's name, showing his protectiveness in a more subtle but important way.
One of the highly regarded Modesty Blaise novels is the first in the series. It sets the tone for the character's adventures. The novels are known for their blend of action, mystery and a strong female lead.