I really like it when they use toys to store the semen in the uke's ass in omegaverse, and when they get whiny when it gets spilled but idk if they will use that for this purpose since the seme seems to be in a rut
I really don't keep track about the stories i have read but you can search in the omegaverse tag especially djs and the short ones. I also found some in myreadingmanga so you can browse there
I really like it when they use toys to store the semen in the uke's ass in omegaverse, and when they get whiny when it gets spilled but idk if they will use that for this purpose since the seme seems to be in a rut