Rin Katsuyama, manager of the kendo club at Souji's school, arrives at the Rippukan family dojo one morning with a bento for Souji. Souji, who has just finished sparring with Utsusemimaru, introduces him, Amy, and Daigo to Rin. Daigo thinks that Rin is Souji's girlfriend, but Souji says that she is not, which disappoints her. As Souji leaves for school with Rin, Utsusemimaru finds a note that had fallen from the bento that Rin had brought. Ian confirms the find as a love note from Rin to Souji, and the two decide to help bring Rin and Souji together by dressing as delinquents; they hope that Souji will jump to Rin's aid from them as they pretend to harass her. Unfortunately for Ian and Utsusemimaru, Amy ends up being the one to "protect" Rin, and Rin mistakenly assumes that Amy is Souji's girlfriend. Meanwhile, Debo Jakireen has been causing trouble with his Relationship-Cutting Shears, severing bonds between loving couples. Kyoryu Red and Kyoryu Blue confront Jakireen, who severs Kyoryu Red's bond of friendship with Kyoryu Blue, causing Kyoryu Red to become overly clingy towards Kyoryu Blue. Kyoryu Blue damages Jakireen's shears, bringing Kyoryu Red back to his senses and forcing Aigallon and Jakireen to retreat. After Luckyuro repairs his shears, Jakireen spots Rin as she, Ian, and Utsusemimaru find Souji out shopping with Amy. Heartbroken, Rin slaps Ian and runs off. Souji catches up to Rin to set things straight and to explain that he owes his friends a lot for helping him become a more open person than he used to be. Before Rin can admit her feelings to Souji, however, Jakireen snips her bond to Souji. Rin becomes obsessively possessive of Souji and tries to strangle him. Jakireen happens upon a nerdy boy pining after a schoolgirl who refuses to acknowledge him and gleefully moves to sever the boy's bond to the girl. However, Jakireen learns too late that the boy and schoolgirl are Nobuharu and Daigo in disguise and is caught off guard. Utsusemimaru destroys Jakireen's shears, restoring Rin to normal. Intending to make Aigallon pay for what happened to Rin, Kyoryu Green defeats Jakireen with Kyoryu Gold's help. Kyoryuzin is formed to take on the Giant Zorima that has joined the skirmish, but is overwhelmed when an enlarged Jakireen joins the fray. Pteraiden-Oh evens the odds, combining with Parasagun and Zakutor to form Pteraiden-Oh Western. As Kyoryuzin destroys the Giant Zorima, Pteraiden-Oh Western finishes off Debo Jakireen. As school comes to an end, Souji gives Rin a present as thanks for her friendship over the years, explaining that Amy had helped him pick it out. However, before Rin can confess her feelings, Souji gives a similar present to the kendo club assistant manager. Rin is incensed and Daigo, Amy, Ian, Nobuharu, and Utsusemimaru rush in to rescue Souji from Rin's wrath.