Fantasy World?

Slow pace＋Superpower light novel＋A different world People call the most abnormal period of their lives youth, but abnormality is the definition of disease. People call the most restless period of their lives youth, but restlessness is a symptom of disease. Therefore, youth is a disease, a disease that is time-limited, contagious and has sequelae. Under the influence of adolescent diseases, teenagers and girls will fantasize about the world, whether it is power, rights, friendship, or love. The world will also "respond" to people's fantasies and grant special abilities called "cursed seals". Illness makes people suffer, so youth also makes people suffer. But the young protagonist is the insulator of youthful diseases. He is ordinary and has no idea what youth is or what the pain of youth feels like. He just lived in this ugly world with childish fantasies and boredom. However, the world gave him the "strongest" curse seal. The "peaceful" Huanying Empire, the "turbulent" Wild Martial World, the "mysterious" Sanye Midu... Power and strength, love and affection, everything has changed. "Why... Do I have to suffer this?"