The Transfer Student Who Brings A Storm

The Transfer Student Who Brings A Storm (嵐を呼ぶ転校生 "Arashi o yobu tenkōsei") is the twentieth chapter of To Love-Ru.

Summary
A man is walking through the school's hallways, searching for Lala, referring to her by her true identity. It then goes to Rito and Lala talking about returning to school from summer vacation. Rito then blushes at the thought of Lala in her school uniform, suggesting that he still considers the feelings he found in chapter 19. The class then finds out that they have a new transfer student. The new student's name is Ren Elise Jewelria and he immediately runs up to Lala, claiming that she is his bride, much to everyone's surprise. He recalls Lala's beauty from their childhood. Ren tries to get Lala to go with him to get married, however she doesn't even remember who he is. Ren, obviously hurt, tries not to get discouraged. Ren then claims that rumor has it Lala is being controlled by an evil man (referring to her love for Rito). Lala then remembers him as "Cry-Baby Ren-Chan." Ren then recalls how Lala use to dress him up as a girl, and how he use to be her Guinea pig in all of her tests. Ren then recalls that Lala told him she would marry him if he became more manly. However, Lala cannot recall whether or not she said such a thing. Throughout the school day, Ren is bent on one-upping Rito at literally everything in class. First at math, then in a 100 meter in gym, then even at eating in lunch. Up on the roof, Peke tries to convince Lala that there may be someone out there more suitable for Lala, however she doesn't believe so. Ren is still following Rito, and almost follows him into the bathroom. Ren then asks Rito to admit that Ren is more manly then him, which Rito quickly does (though sounding somewhat dishonest). Then Ren asks Rito to forget about Lala, which causes him to freeze up a bit, as Lala sits on the roof, contemplating as well.