I love how the two ara ara big breasted women doesn't really care about shit. They're just there to tease and watch the (slow)progress between the two.
At first I wanted to joke about mistaking them for naked in the initial dialogue, but FUCK, another contender? However, this manga actually gives an unusual experience as a member of a harem, lol.
Now a pettan gyaru has join the battle. Cant use that as an excuse anymore, Douki-chan. If you lose him it will be because of your own lack of initiative.