Does anyone know any stuff dealing with a gang attacking a mother and son incest couple?

i cant read japanese so the one you liked the most i wont be able to read but here is one i like with simular story and its translated to english

by the name of [Sannyuutei Shinta] Okaa-san wa Shakkin Dorei desu yo My Mother Is A Debt Slave [English]

google it you would easily find it and if it is what you needed then i have more unless you need the gang to actually do the son as well whiche is some thing rar and hard to find
still there is a hentai where the mom does her son with a strap on

title :
Furyou ni Hamerarete Jusei Suru Kyonyuu Okaa-san

there is a visual novel :Ecchi na Okaa-san to Otoko no Ko to Sono Kareshi
https://vndb.org/v19940

but with no gang just the mother bf doing both she and her son

there are some ntr anthology with the same setup but i cant find it know maybe later