Harry Potter: Eclipse. - Chapter 34:

Two years ago, the mere fifteen-year-old scion of the Lin family, in front of the colossal behemoth that is the Murong clan, made a vow!Two years later, no one knows what he has gone through, but from the moment of his return, he radiates a brilliance that seems to compete with heaven and earth!(Note: The protagonist of this book is very aloof, cold, and passionate. Those who like to read about a military king's ambiguous romances and flirts, please bypass this one.)

Hyde arrives in a doomed world with nothing but his body and fragmented knowledge of the future from a game he once played. He has no grand ambition—why try to save a world already destined to fall? Survival is enough.That is, until he discovers his sister is also transported into that world.However, only he hears the Melody of Nightingale and receives the power to survive.[You have established a connection with The Forgotten Hollow.]Awakening as a Resonant—an elite group with supernatural abilities—he is thrust into a conflict between two worlds. Armed with the authority of space and time, he vows to protect his powerless sister at all cost, even if he has to fight against the Mirage creatures, other Resonants, or even Gods themselves.

-- WSA 2025 Entry --“Five… Four… Three… Two… One…”As the countdown towards the new year went on to the last second, Miles looked up to the sky, just as everybody else did.In the middle of the crowded street, Miles for once felt like he belonged. Being a teenage gamer, living with his parents, and trying to build a life as a streamer, he did not feel like leaving his room every day.But there, in the middle of that crowded street, with everyone around him paying attention to the sky, the countdown on the digital billboard, and mostly anything else but him., Miles felt like a ghost.A welcomed ghost, but a ghost, after all.With a smile on his unseen face, he looked up as the countdown reached one, and everybody sang in unison.‘HAPPY NEW YEAR!”But Miles’ eyes widened as he watched in utter horror, and curiosity, even, hovering above him, a holographic screen with a few lines of text written in it.All around him, although he did not pay much attention to it, a few other people seemed to experience the same situation.[Updating home-world 39515’s version][Version 20.25 update brings a lot of fun and games with the new and improved survival mode][Do you want to convert your previous avatar to home-world 39515’s latest version?][Yes] [No]“Survival… Mode?” Miles’ lips quivered.Before he could think of anything else, though, the people around him began to scream…

Yuki, a high school junior, dies heroically saving a stranger and is reincarnated in a fantasy world, where he discovers an extraordinary and unrivaled power.