Not only is the possibility of Iruka getting pregnant explained (Sexy-no-jutsu + wild nightandhalfofnextday of sex with Kakashi), but all the emotions these character go through in this.. perfection.
And while I wondered if Iruka would have to go through another pregnancy (while raising an overly genius little boy, now 1 year old) since this fic still has enough chapters left for it to be possible..
Let's just say that I'm cackling as much as Sasuke and Iruka are right now while being mentally as shocked as Kakashi and Pakkun and maybe a little horrified as Naruto is.. :