There's about 20 episodes behavior and the last one. I'm useless with Ume Musume, else I'd have uploaded them already.
Also, is that Hishi Amazon in the last panel? I can't find any other girls who match the black hair / hair between eyes / long hair combo.
Sunday Silence/Cafe's "Friend".
Name and appearance not given in official media, but it is explicitly mentioned she looks eerily similar to Cafe so most people interpreted her as a ghostly version of Sunday Silence, the IRL sire of the real-life Manhattan Cafe (whom the IRL Cafe is said to be a spitting image of).