My chocolate – a graphic novel that begins with the main character discovering a strange letter. Inside the message, she reads that an unknown person is willing to exchange her brother for chocolate she made, after which she immediately solves the puzzle and understands what is required of her. In order to save her brother, a young girl, Komati, makes her own way to the criminal, trying to negotiate with him about the offer.

The sender of the letter, Takaomi, is the heir to a wealthy family that owns a stock company. Komachi prepares for an inspection and a deal involving chocolate, but she expects the kidnapper to demand much more than what was previously planned. This turns out to be the case, as Takaomi has other plans for their relationship. The first meeting in Boku no Shokora took place on Valentine's Day, when the heroine received a ransom note.

The gameplay is presented as a short novella, where the action unfolds quickly, without wasting time on secondary events. The gamer will have to control a typical tsunderko, which is not suitable for protagonists of this type of genre. In the first episode, the user learns about how the first meeting of the heroes went, after which access to the continuation of the story is unlocked. The user will watch how the girl solves problems and tries to free her brother from captivity.