Like it seems a little too.. convenient that a girl who's basically the same as Yotaka shows up and is seemingly trying to keep her out of the blue on why she's there for as long as possible (i.e. getting her drunk)
I'm guessing 'Junior' is secretly a softie and I think that dynamic can work (i.e. a failure and someone who tries to keep them in line but indulges in their behavior every now and then).