After having rejected another man who hit on her, a girl ended up being pushed by that man in a jealous rage into a train and died. However, when she woke up, she discovered that she was now possessing a character from one of her favorite fantasy games, Realm of Hearts. Realm of Hearts centered around a heroine or a hero, depending on who the player chose to play, and took place within the world of Hazia. It had a good mix of everything, from romance subplots to even some action, but it centered around solving the mysteries that happened inside of the academy. In fact, the world had very detailed and unique background details and lore, striving to be very realistic and alive, although some critics thought maybe the game should be rated higher as a result, but that was ultimately denied.

It was especially praised for its ability to randomly generate variations in each run, creating new mysteries and making it unique for everyone every time they went through it. Although there were guides that could help, and the characters remained consistent for the most part, there were always differences in how things could go about, resulting in plenty of replayability and made it incredibly interesting. There were even various loss conditions, victory was not guarenteed. And the main characters had a good deal of access and resources to take advantage of, both protagonists and antagonists.

However, unlike all the fantasy novels she had read about this happening, she did not possess the trash character or the villainess with the death flags, but in fact she possessed the Villainess' little brother, who always dies without fail! His death was used for narrative purposes to signify innocence lost, as a precursor to when things truly got bad.

In other words, she, or rather he now, was the character that would die no matter what! Furthermore, he was abused by his older sister, and most people treated him badly for being related to the villainess in the story because of all the trouble she caused. In fact, if he even tried to make any friends, his sister would sabotage his efforts, in order to keep him purely as her plaything. He was even made to attend the academy far earlier then everyone else at his sister's demand, to get him to be closer so she could keep tormenting him.

This was the life he had been reincarnated into, and without a doubt this world is very real. Between people attacking him thinking it would help them get back at his sister, to his sister's own attacks on him, to the dangers within the Academy itself, he will have to fight to survive. But this is not just a game, but an actual world. And it seems that it also intends to deviate from the story he knows.