A Hentai System in the World of Danmachi - Chapter 9 - 8 - Battles inside the tower. Experience points.

All Amy needed to do was get away from her pursuers. The last thing she thought she'd encounter was being kidnapped, drugged and offered to some smelly fat old man.

But no, he wasn't any of that. Zach was simply a god. And he was drugged, just like her. It could be the drugs or she just genuinely found him irresistible. And to her luck, he didn't resist her when she made a move on him. When she found out how much of a beast he was in bed, she wasn't complaining.

But she knew they were not supposed to cross paths. So when she finally left the next morning, little did she know that fate had a 'little surprise' in store.

When the system warned the world that it was coming a week in advance, Alex couldn’t have been more excited. In college for a degree he didn’t care about to get a job he didn’t want, the promise of a world where magic and challenge awaited — even at the potential cost of death — was the best news he possibly could have imagined. Alex was ready for a new life. He ready for his only friend to shove him through a portal into hell the moment the apocalypse started. Instead of getting to punt rabbits and farm wolves, Alex finds himself stranded in a warped world where even the bugs are stronger than he is. Even with a summoner class that gains the powers of its monsters, most people would have died. Alex didn’t get the memo. He might have liked challenge a little bit too much. Where others saw certain death, he found something else. Opportunity.

The fiancée has betrayed, but how could she know that the man she looked down upon was in fact a prodigy with healing and martial prowess!

The handsome Emperor falls in love with a Knightess! Knightess Poliana loses to the Acreian Army and despite her struggles to survive in a male infested military, she is now about to die. But then, the young king of Acreia sees her efforts and tells her: "I have a dream, I wish to conquer the world and become an Emperor, would you like to join me?"