[ Ren really doesn't have much control, and for as much as it frustrates him to not be able to go at his own pace, he can't deny the immense gratification he's getting from the vigorous friction of Iwai seeking his own satisfaction with Ren's mouth. The noises he makes are stifled and brief, but the way his long eyelashes flutter at the hollow threat and the very visible flex of his stomach seem to indicate that he would not be very upset if his 'teacher' did exactly that.

For as much fun as Ren was having, things are not exactly optimal. He doesn't want to give uo, but his head is swimming and his body is craving air. It's sudden, but one hand reaches for the jeans in front of him, clenching the fabric briefly before he taps his leg and pulls his head back for a gasp of air, and a shallow cough. Dammit... he meets Iwai's face with a small apologetic look before it melts into something more determined. ]

I.. I'm not giving up. I just.. gimme a sec... you wanna fuck my throat? Sure. Gimme a chance to get it down and you can shoot your load directly into my stomach if you want. [ he gives a small grin and licks his lips. ] I'm not a pussy.... but if you give me a little time, I'll let you fuck me like one.