Tabuki invites Ringo to see one of Yuri's plays with him, followed by dinner, where Yuri invites her and Shoma to a party. At the party, Yuri announces that she and Tabuki are engaged, but Ringo remains determined, dragging Shoma to her school to help her make a love potion, which is foiled by Shoma's penguin. Determined to complete her mission, Ringo sneaks into Tabuki's room one night with the intention of getting impregnated by him.

Sanetoshi offers Kanba a special medicine to revive Himari, though mentions there will be a steep price in return. Kanba recalls three years ago when he and Shoma learned about their parents being criminals. Later, Sanetoshi contacts Natsume, who had also made a contract with him to save Mario, telling her who has the other half of Ringo's Diary. Meanwhile, Ringo talks to Tabuki, who helps put her worries to rest.

Ringo stumbles on two girls dressed suspiciously standing before the Takakuras' house and finds that they are actually Himari's childhood friends Hibari and Hikari from the Double-H idol duo. They ask her to give Himari a present in return for the scarves she knit for them before leaving. Kanba learned from Sanetoshi that his medicine will not work on Himari anymore, and that according to him, she can only be saved after he fulfills his group's objective. Himari tries to dissuade him with no success and discovers that his hideout is situated under the aquarium where she first died. She prays for God to have Kanba saved in exchange for her life and falls lifeless on the ground. Yuri calls Ringo and returns her the half of the diary in her posession and stays beside an unconscious Tabuki at the hospital, who was stabbed by the attacker who was revealed to be Yuri's former lover and co-worker. Masako tries to convince Kanba to give up as the police is already aware of his plans and has a warrant on him, but he moves forward ignoring her pleas until they are surrounded and he puts himself im harm's way to protect her. Injured and unconscious, Kanba is carried away by his comrades while Masako decides to confront the police by herself to cover his escape.