The Strongest Tag - The Cursed Electric Wave Brother and Sister

The Prince Yuki Fan Club makes for the Hanajima house hoping to expose the secret of Saki's Electric Wave abilities. Instead of answers, they find Megumi, her younger brother, whose own gift for cursing people turns the visit against them.

Motoko Minagawa, Minami Kinoshita, Mio Yamagishi, and Mai Gotou set up what looks like an interview to probe how Saki sends and receives her waves, though their real aim is to dig up a weakness and use it to pry Tohru away from her. Welcomed into the residence and led to Saki's room, the group meets Megumi Hanajima, who explains that he can lay a curse on anyone once he knows their name. Saki soon deduces that the club is only fixated on why Tohru spends so much time with Yuki, unsettling them further. Megumi warns that love brings both joy and hurt and cannot be forced onto others, then appears to curse the visitors by reciting their names, prompting a hasty retreat. Saki closes by admitting that Tohru is her one true weak point, since she is always guarding her.

This is the 2001 telling of a story the 2019 series revisited as "I Never Back Down from a Wave Fight." The script adapts Chapter 29 of the manga.