This is the kind of smut I'm down with. Kanin Saeko actually makes porny manga that doesn't bore me. There's not much plot but her genius is fitting enough plot and feels in that I'm not yawning while reading manga fills with buttholes, semen, penises and ass licking. It can be non stop butt sex with jizz flying everywhere but without a storyline and feels, I'm unmoved.
Futari No Musuko Ni Nerawarete Imasu