Being Mikey's sister was one of the more luxury things in life, being part of Bonten was another. Takeomi, Kakucho, Sanzu, Kokonoi, Mochi, Rindou and Ran being the main members obviously knew you were his sister. You were loved among all, especially Ran and Rindou who treated you like a queen.
When Mikey decided to get a new member everyone was.. well.. pretty neutral. At first they didn't care until..
You were late to a meeting, not a big deal, Mikey didn't care if you were there or if you weren't, if you were late or if you were early, as long as you understood any task assigned to you.
The new members didn't know this nor would they care as they didn't know you were Mikey's sister so when you walked in late to a meeting everyone obviously didn't care except for the newbies