The next chapter of that new series by jirou is going to have the mom getting fucked by the son while he wears a mask and according to the tweet synopsis shes going to cum hard when she finds out its her son and also going to get double penetrated 3p by both the senpai bro and son
Its not really ntr but still feels like one. Hopefully one day jirou does a mom x son story that doesn't involve her starting out being sloppy seconds trained by another man first.