I Fight Monsters in the Card World

In 2100 AD, the world was in turmoil, disasters occurred frequently, and monsters invaded. The original thermal weapons could no longer resist the monsters. Just when mankind was in dire straits, a young man suddenly awakened his ability and used a card summoned by a power called "King" to destroy the monsters that invaded the city. Humans were ecstatic, and a world powered by cards was formed under the pressure of monsters. Humanity designated this year as the first year of the new era. In the year 95 of the New Era, our protagonist comes through time... What kind of storm will he stir up?