Ai to Makoto (Moriyo)
Seiji and Aiji are twins and partners that one day pick up Towa from the street at the very same moment he was considering to sell his body to earn enough money to pay off his ex-boyfriend debt. They take Towa in as their pet and help him to solve his money issues, in exchange, Towa has to be a good boy and has sex with them. Since Towa's perspective, there is something off, because he's in able to tell them apart and when he's with one of them, they never reveal who they are. It's a good story and I loved the end. For me, it's not the incest or the family turning their backs but the way they pretended to be the other, like avoiding their own existance just to attorney for what happened in the past.
Puppy Love (Eumnya)