Ep. 7: Lala's Inventions Cause Chaos While Rito Discovers Her Past

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Lala repairs Nana's De-Dial while Momo mocks Nana's figure, prompting Lala to use an invention that temporarily enlarges Nana's breasts and shrinks Momo's. Momo sarcastically acknowledges Nana's feelings. In Mikado-sensei's office, the group discusses Lala's inventions and childhood. Momo recalls how Lala's wild inventions often forced her and Nana to clean up after their fights. Rito and friends visit Mea's empty apartment, where she reveals she lives alone. Nana finds it strange that Yami is her sister, while Momo seeks details about the master. During a meeting with Mikado-sensei and Oshizu, Momo worries about Mea hiding her true heart. Yami claims their hearts differ from humans because they are weapons, but Rito disagrees, comparing them to Mikan. The meeting ends abruptly when a dog causes Oshizu to rip Yami's clothes, leading Yami to chase Rito. After school, Ren gives Rito Run's CD and explains Lala's sweet personality. Rito reflects on Momo's harem plan. At night, Mikan asks Rito to call Lala and her sisters for dinner. Rito finds Lala fixing an invention and asks when she started. Lala says it happens when she is bored. Momo and Nana eavesdrop, with Momo mistakenly thinking Lala will kiss Rito. Rito asks about past incidents, and Peke explains they were incentives to reunite Momo and Nana. Remembering Ren's words, Rito panics, activates an invention that exposes Lala's privates, and ties them both up. Momo and Nana discuss how much Lala cares for them.