Sniff Sniff x The Only One Who May Hurt Seiji-kun... Is Me.Akame meets Seiji's tomboyish younger sister Akua Aino. Seiji confiscates the Kiss Note after discovering Guri and Yuzu are using the Kiss Note to pair up random students. Guri and Yuzu soon find a love poem written by a teacher named Nakito Kusunoki, who is in love with a student named Mari Shiina. Although Guri, Akane and Yuzu believe that Kusunoki and Mari would make a great couple, Mari later admits to Seiji that she only sees Kusunoki as a little brother. Guri had planned on taking Mari hostage as a ruse for Kusunoki to rescue Mari...