EitherThe big bro will catch his lil bro is somewhere and run to room and bang togetherOrThe friend will bring the lil bro back to his homeThe friend could be annoying but I don't think he will bang his own omega friend.
Either
The big bro will catch his lil bro is somewhere and run to room and bang together
Or
The friend will bring the lil bro back to his home
The friend could be annoying but I don't think he will bang his own omega friend.