Fun fact, aside from how crazy they went on their honeymoon, in Canon it's basically a fact that Kirito and Asuna haven't actually done it even once IRL or in VR (Outside the 200 years they were trapped in the Underworld offscreen where they probably went at it like rabbits again), they just don't have the freedom (Especially Asuna) to ever even try to do so, so Fujino ironically have them a healthier sex life IRL in his AU, in exchange for turning all of Kirito's sexual abilities to the negative and his dick size to the minimum