Shortly before his 20th birthday Ai starts to have prophetic dreams about Yu, his neighbor skilled in driving him crazy. And not just that dreams seemingly come true, but also the more and more romantic nature of them leaves Ai confused.

Shortly before his 20th birthday Ai starts to have prophetic dreams about Yu, his neighbor skilled in driving him crazy. And not just that dreams seemingly come true, but also the more and more romantic nature of them leaves Ai confused on what the hell is going on. Because he doesn't want to believe that the man of his dream could really be the Yu he knows in real life.