Mate Rule #2
Beware of his fangs, when you have sex

In the evening, when Shiro came back from the meeting with the others, Ichigo seduced him.
So now, they found themselves in their bed, kissing deeply.
Parting, Shiro wandered down, kissing a trail along Ichigos body until the collar, and palming the others erection.
Moaning out loud, Ichigo embraced Shiro and instantly bit down in the others neck.
"Ow!"
When Shiro cried out, Ichigo immediately let go.
"Sorry."
"It's ok. You're not used to it yet."
"But we've done it so often already."
Shiro kissed him once more, before turning to continue.
"And it will be many more."
Time flew by and they were in the middle of having sex, when Shiro sat up, pulling Ichigo into his lap.
Thrusting gently up into the orangette, but still striking his pleasure spot every time, he took him into an embrace, nibbling on his collar.
Slowly getting overridden by pleasure Ichigo rested his head on Shiros shoulder.
When the pale one gave a sharp thrust, his fangs found their way into Shiros flesh again.
Subduing a cry of pain, Shiro thrust further into him, which turned into Ichigo biting him over and over again.
"God damn, Ichigo!"
"Sorry."
"Just keep them in, when you bit me."
"Ok."
Shiro continued fucking him and Ichigo tried his best to keep his fangs buried where they were, until both reached climax.
Dropping back on the sheets, Shiro inspected his shoulder.
"I'm looking like a cheese here."
"I'm sorry."
"You'll get a muzzle for sex, until you learned it."
"Or you just stay away from my face."
"How shall I kiss you then?"
Shiro asked giving him a deep kiss then.

You either find a way to avoid his fangs, or you bear with it like a man.

End