I adore this story and couple, Usami is ridiculously lovely, and Shirou too. But the same thing I can't help thinking every time this happens in yaoi - Shirou is headed for a very unsexy bacterial infection! A whole 1/3 of the mass of poop is bacteria. If you're going to eat ass, that butthole better have had the cleaning of its lifetime first.
I adore this story and couple, Usami is ridiculously lovely, and Shirou too. But the same thing I can't help thinking every time this happens in yaoi - Shirou is headed for a very unsexy bacterial infection! A whole 1/3 of the mass of poop is bacteria. If you're going to eat ass, that butthole better have had the cleaning of its lifetime first.