Van Gogh Reborn! - Chapter 315:

superhuman powers awakened and the world changed, yet Jade remained as he was—the ever so heedless, unbothered, emotionless, and weird guy manning the cash register.But some people deemed him lucky because he seemed to be unaffected by all those happenings. But would they still believe that when Jade came home one day from his night shift, tired and hungry, to find a dungeon gate right inside his house?The worst thing that could ever happen to him was get sucked in that gate, however, instead of the gate, strange Seekers are sucking up to him instead.Jade: Why is this happening?!Seeker 1: Help me go back to my world and I can give you everything you wish for.Seeker 2: I don’t care about going back to that damned world, so can you just let me stay here with you?Seeker 3: Jade, honey, you’re the best Minder! I need you, so come with me to my world.And so on… these Seekers are all lunatics forcing him to help them go back to their respective worlds! But how can Jade do that, when all of them were just mere characters from books?!Now, what will Jade do?

He has been abandoned by his clan.

He has been considered waste from his childhood but he is a “Peerless Genius”.

His father with the help of another person has sealed his Dantian to stop him exposing his exceptional talent but after his rebirth, he becomes the most dazzling star of the continent. However he faces crisis and difficulties as his Dao goes against the Heaven’s will.

Overcoming everything, eventually he achieves the highest boundary “The God of War”.

- Description from Novelupdates

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.

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.