Seems like this will just be middling H-slop but I do appreciate the fact that the "winner" is not immediately obvious from the beginning. First girl theory would peg Koharu the winner but she is also the childhood friend and has short hair, two tropes usually linked to losing heroines. She is also being set up the most in these early chapters. I'm smelling a harem ending but the gambler's heart in me tells Himari will pull off a surprise upset.