A Hentai System in the World of Danmachi - Chapter 217 - 216 - I want to explore the dungeon a bit more.

Ukei Kaito fought a desperate struggle in order to fulfill his role as a summoned hero. He defeated the Demon Lord and saved the very world, only to meet an end filled but with betrayal. The companions that he’d trusted throughout his journey betrayed him and killed him by sticking a blade through his chest.

【Sweetness & Bittersweetness + Mutual Redemption + Love Over Time】Xia Zhi got married to He Jinnan, with whom she had a one-night stand. He Jinnan is handsome, good-natured, gentle, and considerate towards her. He takes care of her, transfers money when she's out, and helps her deal with mean people. In every matter, he strives for perfection. Xia Zhi is deeply immersed in his love and believes she will grow old with him. Until one day, she sees the woman standing behind him, the woman that bewitches him, and she realizes that everything has been an illusion. She hands him the divorce agreement: “Let's part ways and wish each other well.” He embraces her and says, “Wife, you've stolen my heart; how can I be well?”

Zhang Beichen downloaded a game called “The Empress of the Warring States Period”. He needs to play the role of a famous minister to help his monarch rule the world and become emperor.

He thought it was an ordinary game. In the game, Zhang Beichen tried his best to make friends with the empress, help her unify the seven kingdoms, and achieve different endings.

Until he woke up, Zhang Beichen discovered that he had actually come to the world in the game, and the magnificent empress in the game was standing in front of him!

The empress looked at Zhang Beichen with a cold and glamorous face, and thought: “He is the servant in the Sims who has made great contributions to me, but is rebellious and wants to marry me?”

- Description from novelbuddy

A teen is summoned to another world as the Hero. It turns out the Hero can power up women with his cum.