My Girlfriend Gets Aroused Watching Me Having Sex With Another Girl

Tonight, I'm gonna get my friend to fuck my girlfriend...
Akitoshi, a cuck at heart, wants to see his straight-laced, art student girlfriend Minatsu get fucked by another man no matter what!!
He can't hold back the desire.

Upon discussing this with his childhood friend, Haruki...
Haruki: “Got it.”
Haruki: “So you want me to fuck Minatsu-chan?”
Akitoshi: “Yeah. I'm begging you.”
Haruki: “For real? Like, are you serious?”
Akitoshi: “I’m always serious.”
Haruki: "You... you're outta your mind..."
And so, after the three of them had dinner, the two idiots tried their best to get her in the mood.

Meguru Osake, a regular office worker, ends up participating in a mysterious quiz game by chance.
And once again, she’s been selected!
This time, the stage is a small village in another world.
She’s invited to take part in a game where villagers pose “challenges” she must complete.
Enticed by the prize money, Meguru agrees to participate on the spot.
Will she manage to complete the game, claim the prize, and return safely to her world?

Regina in a certain village feels worried when she is the last girl
remaining single left by other girls getting married one by one,

She feels, like, totally worried.

Regina:
"It's too bad...... I'll remain single for the rest of my life."
"It's unacceptable! I must find a good guy and get married!"

As soon as she gets ready to go out, she rushes out of the village.

Regina:
"Nothing is more fearful than being 'forever alone'! I'll prove how a woman is strong!"

Another day for a poor guy who is trying to make ends meet. Unfortunately, his hobby can’t get him any money, so he has to find a part-time job for at least a week. Will he be able to do his job and not get fired?

The male protagonist is troubled by the inability to have comfortable sex with his girlfriend.
The person he turns to for help is the gentle older sister living next door, named "Maina".
 
One day, our troubled protagonist accidentally wandered into the neighbor's room, overwhelmed by his worries.
With the caring support of a gentle older sister figure, he opened up about his troubles
—specifically, the difficulty he was having sex with his girlfriend.
Little did he expect that the kind older sister would take it upon herself to provide him with coaching on improving his Ｈ skills!