Sissy, Putri Duyung
Indonesian sinetron Sissy, Putri Duyung (Sissy the Mermaid) has orphaned teenage sisters Sasa and Moya encountering a mermaid named Sissy (Jehan Sienna) who lands in their house's swimming pool after a storm. Sissy tells the sisters that she's come on land to find love, so Sasa and Moya agree to help her pursue Joe, a human boy. Yeah, it's the plot of Aquamarine, which came out a year earlier, though after the first episode's set-up, the next eleven episodes of Sissy spin off in their own direction. But they do include the bathtub scene with the leg trick.
Sissy may start off with Aquamarine's confident attitude, but she's rather clueless and a bit of a crybaby, which is kind of a plot point because this universe includes the trope where mermaids' tears turn into pearls. There are also similar limitations to Sissy's magic in gaining legs, plus she has other magical abilities that come into play.
The main antagonist for most of the show is Sasa and Moya's self-centered cousin Alisa. In Aquamarine these three characters are not related, but in this show they are, because this enables them to live in the same house and get up to more close-call hijinks. Also, this series does away with Aquamarine's twist about love; in Sissy, she specifically wants romantic love in order to gain legs for good, like the Hans Christian Andersen story. There's also a merman, Reno (Framly Nainggolan), who is in love with Sissy and comes on land to try to convince her to return home.
Sissy actually succeeds in getting Joe to tell her he loves her at the end of episode eight, which naturally means (and I'm not kidding) that Joe dies in a car accident in the very next episode. The last three episodes feature more dramatic shenanigans when Sissy refuses to believe Joe is dead and pursues a new boy named Nick, and Moya is retconned to have been evil all along and worked with Nick to sell Sissy out to villains who capture Sissy and Reno to torture Sissy for pearl tears. At the end Reno regains his powers so the pair can escape and, as Sissy has had such an awful time she's learned the valuable lesson that love doesn't exist and humans are awful, so it's best to return to the ocean. Sure, why not.
