Bath
"W-Wash your back?"
Kouhei's throat went dry at her suggestion. Yuuna had a way of teasing him, throwing out lines like this now and then, each one setting off a spark that he fought to ignore. Sometimes, he could feel a stirring within him—a heat pooling in his groin—but he forced it down.
"Yes." Yuuna's tone was casual, almost like it was the most natural thing in the world. "I can't reach back there on my own. Usually, Aria would help me, but she's fast asleep. So, it seems there's only one person I can ask… and that's you, isn't it?"
"Uh, but..."
"And you haven't showered yet either, have you?" she added with a sly smile. "Wouldn't it be more efficient if we both just… took a shower together?"
Kouhei's brain was short-circuiting. Efficient? That was her reasoning?
"In this world, isn't the best way to deepen bonds… to get naked together?"
Technically, she wasn't wrong, but—