"You're right... Probably not fighting fair. We could call a truce if you want; you stop teasing me about that 'your girl' stuff, and I'll stop this."

[Weird though, how a part of him hopes she won't call a stop just yet. Especially with the way she's leaning into him, and making those gasping noises. He can't help but be a little bit proud he can pull a reaction like that out of Mitsuru.

Or maybe it's also that he feels grateful, that she's still willing to drop her guard enough to react like this.]

"Guess I can work with 'girlfriend' and 'boyfriend.' Just never thought it would apply to either of us... Not that I mind being wrong about it."

[He tries to give her a little bit of a break, murmuring that against Mitsuru's cheek instead of her neck.]