Quote Originally Posted by Lord Raziere View Post
aaaahh! I just realized. they replace killed team members in Naruto!

I had forgotten, now I need some explanation for why Risanagi's Team has been a team member short for 2.5 years, and have to introduce another character to fill in the gap.....
They could just be hiring whoever is free at the time of their missions

The team to rescue Sasuke was made that way, so it seems there's no rule saying the members have to be permanent.