Bloodbrothers

5 clues
Friends for life
Ritually bonded males
Ritually linked friends
Soul sisters' relatives?
Men who have pledged loyalty to each other
Similar answers:
Amesbrothers
Avettbrothers
Baldwinbrothers
Bandofbrothers
Bandovebrothers
Bigbrothers
Bloodbank
Bloodbanks
Bloodbath
Bloodblister
Bloodborne
Bloodbrothers
Bluesbrothers
Brandofbrothers
Brooksbrothers
Brothers
Brothersand
Brothersinlaw
Brotherskipper
Brotherssibling