The protagonist, Noriyuki, lost his young wife to an illness a few years ago. In the midst of despair, he met Haruka who then supported him.
Afterwards, Haruka's existence meant a lot more for Noriyuki, which led him to opening up about his late wife and proposing for marriage, to which Haruka accepted.
Their happy married life started, with Noriyuki working at a company and Haruka working at the university she graduated from.
One day, the younger brother of Noriyuki's late wife, Rikurou, who he hasn't been at contact with for a long time, appeared before him with a DVD. Inside the DVD is a video of Haruka being fucked by Rikurou, with her defloration scene on tape as well. When he asked Haruka about it, she said it was a folly of her youth.
However, Noriyuki saw it as a mere thing of the past and not something they should worry about, and that even he himself had another woman in the past. Once again confirming their love for each other, the trouble was gone.
Or so he thought...
The protagonist, Ayano Taiki is a physics teacher at a high school. In school, he also acts as an advisor for the Astronomy Club which is a club consisting of only two members, sisters Aimi and Yumeno. He is living a peaceful and fulfilling life.
One day in July, Taiki is invited by the sisters to come with them to have a "training camp" in their home village they are returning to for summer vacations. Since he has no parents or relatives and as such, nothing to do, he gladly takes the sisters' invitation
When summer vacations start, he arrives at the countryside where the sisters wait, there he meets their cousins Saki and Chieri and receives a warm welcome.
This will be a great vacation, is what Taiki thought... But what awaited him, were quickly-passing days full of obscenity.
Impregnate heroes and demons to create the ultimate army and push your desires
to their absolute limit!
Summoned to another world by a powerful demon, a man finds himself at odds with
retired hero of legend Lucia and the current hero, her daughter Sara. But with none of the
expected parallel world advantages, he goes down in one hit and is left by the wayside.
Defeat here would be a death sentence, so he concocts a plan -- take Lucia hostage and
teach her a thing or two with his dick! Now she's loyal only to him, and he impregnates her
as part of phase 2 of his plan to create a dark harem army and walk the path of depravity!
The former hero, Lucia...
her daughter and current hero, Sara...
And the cold, capable demon lord, Karla...
They're all as strong as they are beautiful... but they're no match for your dick!
With your powers of penile persuasion, no one can stop your plan to rule the world!
Ayato is an exorcist who works for the government. This time his mission is to investigate and destroy a supernatural object which had been brought into the sword arts school Murakumo Gakuen. With the help of his team members Hime and Ruri, he traced its location to Matsurika, the sole daughter of the head of the Swordbearing Defence Group. They were successful in destroying the object, but as a result, Matsurika became the initiator of the Spiritual Calamity. To teach her skills to fight against spirits, Ayato became a temporary mentor to her.
“No matter what, I want to stand by your side…”
What if a younger girl wants to take care of "you"?
The protagonist lives alone after getting transferred to a local city. One day, he met Hiiragi Isana, a girl who has problem with her bicycle.
As a gratitude, Isana who learned protagonist's circumstances offered to taking care of him. Thinks she said it as a courtesy and won't actually happen, the protagonist casually agreed, but...
Isana actually came to his home and taking care stuffs like meals and cleaning. Then, while playing together and taking care of Isana's study and other stuffs, the distance between them got closer and closer.
The new throbbing daily life with younger girlfriend starts.
Second year, Tsujidou Tadaomi thinks that, next year I have to prepare for entrance examination so this year, I want to make the best summer vacation memories with her.
So what kind of summer would you like to spend with her?
Do you want to lead or do you want to be lead?
The main character returned to his parents' home after university, but there is awkwardness with his family because of his long dormitory life.
He shared it with his mother's senior and neighbor, Kyoko Kawashima, but she actually wanted the protagonist to be her own son. She set up naughty skinship in form of advide to dazzle the protagonist.
However, his mother, Chikage, notices it. Kyoko then goes all in to shrink her relationship with her own son.
In addition, his tsundere's younger sister Aki and Kyoko's daughter Yuma participate in the battle, and the kinky family's skinship around the hero begins!