Post-series, since... well. Just because. The two are separate, I just didn't think the second one warranted an entirely different chapter.
Disclaimer: Whatever madness I dream up for this fandom, rest assured that CLAMP can top it.
"Hyuu~! There are two Kuro-chus!"
"Kurogane!" Both men bellowed, then stared at each other.
"What's wrong, Kuro-rin-sensei~?" Another Fai climbed in through the window, and Syaoran began to look pained.
Yuuko was highly amused to have two Kuroganes, three Syaorans, three Yuui/Fais and three small bunny things in her school. In fact, the first thing Watanuki heard upon entering the room was Yuuko tittering that "We just need one more Kurogane-sensei to finish off the set!"
Both Kuroganes spent the day yelling at her while two of the blonds gallivanted with the Mokonas around the school, the third following with a long-suffering smile; one of the Syaorans seemed to be trying to give himself a concussion with the blackboard (which one was anyone's guess), Watanuki flailed, Yuuko laughed-
And the school just collectively shrugged and went about their studies.
After all, it was just another peaceful day at Horitsuba Gakuen.
"Yuui-kun, where's your homework?"
"Ah, my dog ate it. Isn't that right, Kuro-woof?"
Inarticulate rage.