In the anime Sekai Ichi Hatsukoi (World's Greatest First Love), episode 9 is titled differently across its two seasons, focusing on two separate couples in the Emerald editing department. Season 1, Episode 9: "The Case of Shouta Kisa"
Ritsu visits Takano’s apartment to bring him medicine, only to find Yokozawa already there taking care of him. This leads to a harsh confrontation where Yokozawa tells Ritsu to get lost and asserts that he is better for Takano. Sekai Ichi Hatsukoi Episode 9
Kisa, who is often insecure about his age and past "easy" lifestyle, finds himself increasingly distracted by his feelings for Yukina. A major misunderstanding occurs when Kisa sees Yukina in a hotel district with a female friend, leading him to believe Yukina is cheating or uninterested in him. In the anime Sekai Ichi Hatsukoi (World's Greatest