>>1118178A boy falls in love with a girl.
Unable to confess, he is gifted with by a deus ex machina with the train the girl take to and from school. Never minding the strange train number, he immediately talks to her on the train, and is overjoyed to find out that she has a crush on him as well.
But, the next day, when he recounts the previous days confessions to the girl, she only looks at him with a perplexed expression. After some investigation, he finds out that the girl he met on the train is not the same girl he fell in love with. In fact, she doesnt exist in this universe at all. She is the girls alternate universe counterpart, who has fallen in love with the MCs own AU self, who too is blissfully unaware of her crush.
Hijinks ensue as the two strike up a deal to give each other their darkest, most private secrets in order to equip the other with the weapons they need to conquer the heart of their other selves. While the two chase their respective loved ones, DRAMA ensues as they begin to fall in love with each other instead and question the NATURE of LOVE.