Setsuna Kamiya, an heiress of one of the Oni Tribes

Another Troll soon fell down after its head has been decapitated by a blade purely made out of ice in your left hand. Nearby, the mysterious female Oni also puts down another Troll by bombing its head with a ball of orange fire.

Now, there is only one Troll left. And it's the 60 meters tall one. As Martina is flying her Griffin right to its head, it suddenly collapsed on its own and no longer moving.

This sudden change caused a lot of confusions in your mind and everyone else.

"What are the Trolls? Where did they come from? How did they fall down from the sky? And why did that giant Troll just... died on its own?!" You thought about what you've known about the Trolls so far. And none of them make sense.

"Setsuna!" Maribel said as she's waving her right hand to the mysterious and beautiful redhead Oni you encountered earlier.

"Maribel! Glad to see you again, girl!" The female redhead Oni, now identified as Setsuna, quickly jumps down from the rooftop and run to meet Maribel and hug her like she is her old friend.

"So... you two know each other?" You asked, wondering how did Maribel know her.

"Not just her. Me too. And yes, she's our friend." Martina said as she's landing her Griffin behind you. Then, she gets off from its back and approach you, her twin sister and Setsuna.

"Martina!" Setsuna said as soon as she sees her and quickly leave Maribel to hug her.

"Glad to see you again, Miss Kamiya. It's been a while." Martina said as she's hugging her back.

"Oh come on now! We're all friends! Just call me Setsuna!" Setsuna said, insisting that she is being referred with her real name instead of her last name. Then, she finally realized you, who is a complete stranger to her, is standing among her and her friends.

"And who are you, handsome?" Setsuna as she's leaning her face closer to her, making her large boobs very close to your chest!

Meanwhile deep among the clouds in the sky, a giant sky lantern powered by fire is flying above the heads of the inhabitants inside the three Walls. Sitting around the platform of fire that is fueling this flying vessel is a group of hooded individuals who are whispering and murmuring something. They are turned out to be the Liches, the undead skeletons of both the Light Elves and the Dark Elves alike despite how much similar they are to human skeletons.

The giant sky lantern also contained a deck below it, where a significant number of skeleton warriors resided. The deck is divided into captain's cabin, a chamber where foods and drinks are stored along with other cargoes, and located between these two is an area where the crew's members are supposed to eat, drink and sleep if they are not skeletons and also where cannons and the cannonballs are being kept. And onboard this vessel, there are few bathrooms. Of course, since most of the members of the crew are made up of Liches and skeleton warriors, they have no need to eat or drink. And most of the cargoes are made up of what appeared to be glowing red violets crystal balls.

Inside the captain's cabin, a seemingly appeared to be female individual in black hood with robe is sitting behind her desk, watching the aftermath of the latest attack by the Trolls through a crystal ball. And now, she is staring at you, your lovers and the possible latest addition into your harem right at this moment.

Back down below, Setsuna introduced herself to you as the heiress of the Kamiya Clan and the Princess of one of the surviving Oni Tribes that are residing within the Middle Ring of the Virginian Wall.

She introduced you to her hometown, Spyridonople, named after husband of Queen Joanna the Great, Prince Consort Spyridon, and took you and your lovers to one of the noodles bar in the city that also ran by three Oni who are her kinsmen. There, you, Maribel, Martina and Setsuna get to enjoy udon noodles soup and tonkatsu.

"So let me get this straight. You've been sent on a mission by the High Priest in the capital to find... this guy?!" Setsuna asked as she's pointing her chopsticks at you while also chewing a piece of tonkatsu in her mouth.

"Basically, yes." Maribel said as you're slurping udon noodles into your mouth. After that, you picked a piece of tonkatsu up and eat it with your chopsticks.

"Wow! That is... amazing!" Setsuna said before picked another piece of tonkatsu with her chopsticks and eat it.

"And I thought everyone who lived in the Walls are all Elves. So how did you and the Oni ended up here?" You asked while also chewing the noodles in your mouth.

"Like most of the things before these Walls came to be, there are not many records left. All we know is that we Oni came from an island in the East and that there are only six tribes of Oni live here." Setsuna said before picking her udon noodles up from her bowl with her chopsticks and eat them.

"Also, no offense to you but the Oni here seemed... different from how they are depicted in my world. So may I-" You asked as you've observed for quite a while that the Oni here are not as big, muscular, having bloated bellies or wearing primitive tribal outfits at all. Rather, there are just slightly taller than the Elves but most of them are just as tall as humans, wearing kimonos of many colors and definitely come into various shapes and sizes just like the humans back in your world.

As time passed by, you and the three girls enjoyed your meals while also talking a lot more. And during the conversation, Setsuna asked them if they have a place to stay at the moment and decided to invite them to come to her place if they do not have a place to stay for a night yet. Not wanting to hurt her generosity, you and your lover accepted her invitation.

After she paid for the meals, Setsuna led you, Maribel and Martina to her mansion. As you're passing by, everywhere around you is being repaired by both the Elves and the Oni alike. The houses, the shops, the inns. The Light Elves, the Dark Elves and the Oni worked together to repair the damages caused by the Trolls.

And while you're walking behind Setsuna, you're thinking about her big her boobs are and how much sexy her body is. And so, you cannot helped by wanting her to become one of your women too! But unbeknownst to you, Setsuna herself also has an agenda of her own. And it is involving you!