Sherlock (TV)+1
Outclassed Outplayed and
by Jupiter_Ash
Based on this prompt here where Sherlock and John's children are basically Jake, Ben and Karen from Outnumbered. For argument’s sake technology in their world has gotten to the point where two men can donate their DNA and 9 months later would be handed their child. For some reason, Sherlock and John were allowed to do this three times.