Twincest?

really do recommend
http://www.mangago.zone/read-manga/uchi_wa_futago_de_teippai/

Thanks! I'll check it out.

I like this one: http://www.mangago.zone/read-manga/futari_no_musuko_ni_nerawarete_imasu/

But in this manga twins are seme and they have threesomes with their stepfather.

That works too (≧∀≦) Thanks!