From Brother to Bother - when did that change?

Harry Potter - J. K. Rowling
Gen
G
From Brother to Bother - when did that change?
Summary
Bill watches his little brothers grow up...They love each other, they are protective of each other, they would protect each other...when did that all change?whose fault is it?(A short story why I love Percy Weasley so much! it wasn't love at first, but the more I grew up, the more I understood him.)
Note
Fluff! Just fluff!But keep an eye on the tags, the chapters will get progressively bitter.

Chapters