Flashing back to one year ago: in truth, Serizawa had fallen in love at first sight with Suzuki as he read intently in the library! Upon discovering that the book Suzuki was reading was a BL, Serizawa began secretly devouring BL novels just to get to know him better. After witnessing a former friend reject Suzuki for his passion for BL, Serizawa resolved to publicly declare his own love for BL just to protect him and become his best friend!

Agonizing over the question, "Who could Serizawa's crush actually be?!", Suzuki is spiraling. A group trip to the beach only sends his panic through the roof when upbeat, extroverted girls show up! Even after Serizawa drops an outright blatant hint—saying it's "a clueless person who is always by my side"—the hopelessly oblivious Suzuki jumps to an absurd conclusion: "It must be Takeuchi, who loves BL and has been close to him since freshman year!".

During preparations for the cultural festival, Suzuki throws himself into committee work to avoid Serizawa and bury his feelings for him. On the day of the festival, the dynamics among Suzuki and those around him begin to shift in various ways. Amid the buzz, the popular crowd decides to throw an after-party to celebrate all his hard work.

Suzuki finally finishes his BL novel and rushes to share it with Serizawa, his first reader. Moved by its happy ending and everything they've been through together, the two celebrate this special moment. Later, Suzuki gathers the courage to confess his feelings, even though he's prepared for rejection. But Serizawa's unexpected response threatens to change everything.