Man, this one had potential for double aunt/nephew (David + Sarah, David's Mom + Aaron), double mom/son, brother/sister, sister/sister, cousins (Alice + Aaron) and several threesomes/foursomes and yet the idiot who paid to add Uncle Peter thought his shitty fetish was what this comic needed...
I insist, if they really wanted some uncle/niece action, they should have used Alice and her uncle or add another uncle (Sarah's brother?) that would also serve to push the idea of sibling incest into Alice, Uncle Peter is totally unnecesary to the plot, Sarah is already corrupted, David doesn't need his help to fuck Alice, what's the point of this old fart other than to fulfill the "creepy ugly old man" fetish some guy paid to see?