Ember Sea Farewell

Seventeen-year-old Wang Yichen is the standard bottom-of-the-class invisible student at No. 3 High School. With consistently failing grades and almost no social life, his days are dull but stable. His only skill is automatically blending into the crowd, and his entire life script is simply to endure high school until graduation. That is, until a rainy night at the beach during the graduation party, when the waves merely wet his ankles, and his ordinary life completely flips. No one told him that the seawater hides an ancient pulse that has not awakened for ten thousand years, nor did anyone tell him that his utterly ordinary mortal body contains the last ember blood of Atlantis. After that night, the world quietly changes. Calm coastal waters hide wandering shadows, ordinary waves conceal terrors capable of swallowing everything, and the deep-sea remnants and mysterious sea god followers who have been silent for a millennium begin to emerge from the shadows of the human world, fixing their gazes on this ordinary high school student. Even more absurdly, this divine gift comes with a reverse debuff: the stronger he becomes, the colder he grows; the more he protects those around him, the easier it is to lose his own warmth and memories. Forced to stand at the center of the chessboard, this ordinary youth slowly confronts his inescapable fate, caught between liveliness and loneliness. — Description from novelcodex.org