Touch, Shiyo!: Love Application

The protagonist of the story is a young high-school student who one day receives a strange package from an unknown sender. Inside, he find a smartphone and a letter informing him to be have won a prize of becoming a test user of a brand new yPhone smartphone. Engraving on the yPhone says that the device has the function to know one's destiny, to read one's mind, and to make imagination come to life. Skeptical at first, the boy launched his new yPhone and found four girls to be destined with on i...