The 'Walter Boys story' might be about a family named Walter. It could involve their daily lives, relationships, and the various adventures or challenges they face. Without more specific information, it's hard to say exactly, but it likely centers around the Walter boys in some way.
The Walter boys themselves are surely important characters. There are likely to be a number of them, each with their own personalities. And of course, the main character who has to live with them is important. Maybe there's a parental figure in the Walter family as well, like a mother or father who plays a role in guiding the family and interacting with the new addition to the household.
One of the main themes could be family. The story might explore the dynamics within the Walter family and how the main character fits into it. Another theme could be growing up. As the story progresses, characters may face challenges and experiences that help them mature. Also, friendship could be a theme, with the relationships between the different characters being developed and tested throughout the story.
The girl who enters the Walter family's life is central. She has to navigate her new life among the Walter boys. There's probably an eldest Walter boy who might be more responsible and a younger, more mischievous one. And there could be a middle - aged Walter boy who is in between in terms of personality traits, like being more of a mediator in family situations.
In 'life with the walter boys novel', adaptation is a key theme. The main character has to adapt to a new family situation when living with the Walter boys. This includes getting used to different personalities, new rules, and a whole new living environment. Also, themes of loyalty and trust are present as the characters build relationships with one another.