When clouds in the sky and falling rain tease the two close friends in trouble, Rei and Kai, it takes them to meet Arashi and Fuma, who are not only cunning saviors but also guys making storms in the two best friends' hearts. The war of love is about to take place in the warm spring, hot summer, lonely autumn, and cold winter. How would the atmosphere of love be? Which way would their hearts wave and the air full of love take them to?