Tate no Yuusha no Nariagari - Chapter 361 - An Enemy of an Enemy is

The formless ancient world was infested with despicable demons. They hunted and feasted on mankind, keeping the human civilization constantly in a weak and suppressed state.

During the first known year, a magical mountain descended into the world from the realm of the Gods. Carved on this enormous mountain was a message: ‘Heaven Prevails’…

After the Grand Descent, a name that was given to the descending of the mountain, the Three Great Sages made their ways to Mystic Mountain where they learned to harvest what we now call magic, establishing the Mystic Cults and eighty-one sacred shrines to help aid mankind with the cult’s mystic powers against the eternal fight to the death with demons.

- Description from Novelupdates

agreed. He thought they might just talk, have a few drinks, and that nothing significant would happen. However, she invited him to a hotel, and they spent the night together.The next morning, she told him it was just a one-night stand and that they would probably never meet again. She said goodbye and left. Ronan also decided to treat it like that.The next day, at his college's hosting club, Ronan was given the responsibility of hosting that year's annual function, where they had invited a singer.When Ronan looked up at the singer, he was shocked—it was the same woman he had spent the night with. After checking her history and social media, he formed an impression of her. Every picture she posted was in revealing clothes, bikinis, or almost nude outfits.He concluded that she was just a promiscuous woman, likely driven by lust, and that she had probably chosen to spend the night with him simply because she found him handsome.Understanding this, Ronan decided to focus on his work. That morning, she had made it clear that it was just a one-night stand and nothing more. He would treat it exactly that way and carry out his responsibilities.Protagonist has System---No NTRIt's Harem, with many girls but The Singer is Main Heroine.

# SCANDALOUS GIRLFRIENDZhou Yun was just a newly debuted actress, but because she happened to stay in the same hotel as the top male celebrity, Song Chi, she became “Song Chi's underground girlfriend” that the entire nation had their eyes on. She was now trending on the internet.“She's taking advantage of my big brother's popularity!”“My big brother would never fall for a woman like her!”“Zhou Yun, you should get out of showbiz!”…There were curses all around. Facing such an undeserving calamity, Zhou Yun had a hard time saying anything.At this moment, a stranger suddenly sent her a friend request.He asked, “I heard that you're my girlfriend?”“Who are you?” Zhou Yun asked.He replied, “Song Chi.”