Ito/Otoha

Well, Ito is unarguably the straightest character in the show.
Het kiss warning
Ito x Kouji

Her chemistry is so much stronger with Otoha though
And if you keep drawing parallels from their parents, they're gonna end up breaking up and one of them is going to die in a car crash

Came here to post my incredible amount of approval I never thought I'd see Pretty Rhythm yuri ;_;

Even if it's not Ito/Otoha. Bell/Otoha is pretty amazing too.