We Are The Reckless (BTR fic)

Kendall Knight is not a foster kid. But he has seen the life of one. His mom has always been a foster mom, although she has raised only two generations of at-risk kids. The last generation just moved out, leaving Kendall in nothing but relief now that no one is in danger of hurting his mom or sister, Katie. See, Kendall has always been protective of his family. Ever since "Daddy" left the picture, Kendall had to step in for his family. But will his authority and protection be threatened win Mama Knight brings home 3 more boys? Or will he take a liking to these new guys?