Sumire's terrible luck strikes again,to the entertainment of many.
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Nah guys, I don't think it's a trap, Kanae is betting a lot of her own competence evaluation on this. She wants the drama to be a hit and Sumire to succeed.
But she wants Sumire to succeed under her own terms, with her own methods. This is all about validation for Kanae, proof that she's still got it. At the same time she's also getting the disobedient prodigal child that got away back under her thumb.
Hmmm, notice how modestly Kanae is dressed at her meeting with Yuusei. Sensible two piece business suit, hair tied back, no flashy earrings... She's the very image of serious professionalism.
It shows that she respects him enough to put up an act.