Daisuki na Haha

Based on the CG collections by ぱすとG (Past Gadget). Episode 1 The story of a neighborhood boy who exploited his friend's mom into having sex every day. Later things escalate and she has sex with her own son. Episode 2 "Can I call you mother from now on?" She was practically r*ped by her son's home tutor. Moved by the absurdity, baffled as she was groped, everything began there. (Source: DLsite English)

MILF Park

A mysterious girl was reading a book, seated in the same position every day. Until one day, when a boy who parted with his friend after playing tried to greet the girl. Curious of what the girl was reading, the boy asked "what are you reading about?" With a sweet smile from the girl, she replied "come sit next to me, let me tell you what I'm reading." The girl told a sex story from a book she read. After reading it, the girl said "my house is nearby, do you want to come to my house?" (Source: Nekopoi)

The Sleazy Family (1)

Everyone knows that the family that plays together, stays together. Especially when it's a sleazy family! Masaru walks in on his Aunt Miyuki and catches her in an intimate moment. At first he tries to run away, but Miyuki entices him to stay. When Masaru's step-mom (Miyuki's sister) sees what they're up to, she just has to join in! (Source: AniDB)

My Classmate's Mother

Jun is in his second year of high school. He loves a female teacher, Keiko, though she is much older than him. He joins a badminton club that Keiko is in charge. Luckily, there is no other club members and he enjoys practicing it with Keiko after school.... One day, a girl talks to him.... It is Keikos daughter, Sae. "My mother talks about you a lot at home." Also, he finds that her husband passed away ten years ago. Triggered by this fact, he makes up his mind to tell Keiko that he loves her.... (Source: Saishuu)

Kaa-chan no Tomodachi ni Shikotteru Tokoro Mirareta. THE ANIMATION

Based on the erotic game by Orcsoft Team Goblin. Naoki overheard his mom having an embarrassing conversation about him with his next door neighbor Shiori. Yet even so, he's still looking forward to the next five days. Naoki's close with his mom, but since they live together he sometimes wants to stretch his wings and fly a little crazy. He wants to be able to fap, without being concerned about his mom or anything! One time Naoki ends up attending an event for his mom's work, but the whole time he was thinking about that super hot porn video his friend showed him. And Shiori's there. They've been neighbors for 10 years, and it wouldn't be strange to call her his second mom. Well, except for the fact that he found her body incredibly sexy... He wouldn't mind losing his virginity to her. But just when Naoki had decided that was impossible, she starts to comment on how handsome he's gotten... (Source: DLsite English, edited)