Now, I kind of understand why both of them fell in love with Izumi.
But I personally like Koharu more. Instead of the selfless and meek shoujo fl stereotypes we usually see, even tough her appearance screams "CUTE!" her personality is actually the opposite, and she doesn't fawn over ml's good looks easily but seeing him for who he really is.
That's why I'm really rooting her to be with Eiji