^
If BK and C-ute are going to have physical altercations then there needs to be a storyline to explain why two groups who are harmoniously worked together before now want to beat each other up. Scarce resources might be a good storyline. Have Tsunku announce that he has created the "super bomb track yo", a song so funky that whichever group sings it first will get a #1 single. Have a competition between BK and C-ute for the song (MM couldn't be bothered since they get bomb tracks on the regular and S/Mileage feels that they need another year or so of seasoning before they can rise to the top). Have accusations of cheating among both sides. This escalates in a physical confrontation.