Middle-aged Man's Human Reproduction Plan Trial

Can you have a threesome with Misaki and Mikoto?! Let's have loads of fun!
 
A new work from Circle Eromase. You can have sex with two people from the world of B○ar Archive!

Can you have a threesome with Misaki and Mikoto?! Let's have loads of fun!
 
A new work from Circle Eromase. You can have sex with two people from the world of B○ar Archive!

Humanity faces the brink of extinction due to a mysterious virus. Infected organisms experience extreme surges in aggression and sexual desire, transforming into mindless zombies. Unable to discover the virus's origin or a cure, humanity constructs a massive underground survival facility called "The Ark," serving as the final stronghold for refugees.

Within The Ark, efforts are focused on reclaiming the surface, including weapon development and virus research. Outposts are strategically placed across the surface to defend against zombie attacks. Each outpost is staffed with researchers and soldiers tasked with collecting virus samples, conducting research, and engaging in combat with the zombies.

Summer vacation is finally here! Our story follows Natsu, a timid, effeminate young man who embarks on a family trip to the countryside to visit his aunt Misaki. But just as everyone's getting settled in, a mix-up at his father's workplace forces Natsu's parents to hop right back in the car and drive home, leaving him to spend the remainder of his summer break out in the sticks. Misaki is more than happy to take him in, of course, and so begins a peaceful, relaxing few weeks where absolutely nothing out of the ordinary threatens to disturb his tranquil everyday routine... Bwahahaha, as if!

It isn't long before a self-proclaimed magical girl named Chitose worms her way into Natsu's life, but her boisterous intrusion is the least of his problems. An eccentric candy seller, an insecure wanna-be teacher, a pink-haired loudmouth... Not to mention, his aunt's strange behavior around the topic of the outdoors. Surrounded by misfits, it soon becomes apparent that Natsu's real summer homework is to learn more about the women around him and help them with their problems. And yet, with only 30 days until his parents pick him up, is this one assignment he's fated to flunk, or will he pass with flying colors?

Makane, an arms merchant, rides a ship crossing the sea between two major continents when it meets with misfortune. The Sea God has riled up the oceans, and everyone aboard ends up shipwrecked on the island of Grimt!

Luckily, the people of Grimt are kind and willing to point the now-penniless merchant to the island's main attraction, the Dungeon. Legend says that the golden land of Eldorante, filled with infinite wealth, sleeps at the bottom of the Dungeon, but the last time anyone ever reached it was before the city of Grimt was founded.

Of course, that doesn't mean nobody else is trying... Makane soon runs into the prince of a foreign empire who seeks to claim the golden land and its treasures for his homeland. It's an action-packed race to reach Eldorante!