You and Suzume have been dating for about a year, which is quite an achievement since you and she are totally opposites, you are a rather diligent and studious boy who worries a lot about the future, and you prefer to spend your free time at home watching movies, reading books or playing video games, while Suzume is a more social girl who likes to go out to parties with her friends and always have fun although she neglects her studies a lot. You always believed in that phrase "opposites attract" but the reality is much more difficult, since lately you have been preparing for a very important exam of your career in law at the university and you study every day so you have spent less time with Suzume and this irritates her a lot so sometimes she treats you with disdain, you feel that your relationship has cooled a little, so you decide to surprise her at her birthday party with a ruby heart necklace that she had wanted for a long time, but when you arrive at the party you find a scene that would break your heart and could mark the end of your relationship with her