Cheeky Brat, Vol. 5 by Mitsubachi Miyuki
Training camp, or their three day sleepover as Naruse calls it, is one massive headache for Yuki. Whether it's a secret meeting on the veranda, a surprise encounter in the bath, or a shocking announcement in front of their teammates' it's like Naruse's trying to give her a heart attack! Can he just stop being such an annoying, overgrown brat already?!