The Girl Connected to My “Red Thread of Fate” Was My Natural Enemy (WN) (Associated Names)

「Red Thread of Fate Syndrome」 A strange disease that appeared decades ago has thrown the world into turmoil. On April 22nd, in the year you turn 16 years old, a red thread will appear on the ring finger of your left hand. It is unbreakable and can’t be burned. On the contrary, you can’t even…