I also have an idea for a sequel to Powerpuff Girls Z.
It's called Demashita! Powerpuff Girls Z Mugenban, or Powerpuff Girls Z: The Infinity Saga for the Western crowd (such as I).
Set three months after the defeat of HIM, the girls (Momoko, Miyako, Kaoru) go back to living their normal lives, only occasionally having to sortie off to go stop burglars or fight monsters. Momoko is still looking for a boyfriend, with no luck. Miyako's still chill. Kaoru's still kicking ass in sports. About the only thing that's different is the strange dreams Momoko has been having, but everything else is as normal as can be. Then, one day, only three months before the girls graduate from junior high, a transfer student is introduced. This student claims to be called Megane Midorikawa. She's rather tiny (like, Ken's height), has long, platinum blond hair, and wears glasses (hence her name). She ends up getting along really well with the girls, especially with Momoko. But while the girls meet a new friend, the Professor meets an old enemy.
This enemy is Ryousuke Haneda (this series' Dick Hardly), and whereas Dick just used '98!Utonium to do his homework and stuff while he hung out with girls, Ryousuke's relationship with Z!Utonium was pure hatred from the start. Here's a list of reasons:
-Ryousuke is a narcissistic asshole who thinks of himself as "the superior lifeform", and wants to prove his superiority by doing lots of horrific things (which he does).
-Utonium apparently "stole" his "girlfriend" (Mrs. Kitazawa), as well as all of his other friends. In reality, none of those people liked him in the first place.
-Ryousuke is VERY xenophobic, especially towards Westerners (mostly Americans and Brits).
-And on top of that, Utonium and his son "created" three superheroes that essentially killed the devil, which drove Ryousuke over the edge. In reality, this was an accident caused by Peach, the robotic dog, but Ryousuke doesn't know that.
Somehow, Ryousuke got himself superpowers (long story), and uses these powers in the first episode to blackmail and capture the Professor. What did he blackmail him into? The show doesn't say directly, but it had something to do with the girls.
Anyway, Momoko is chasing after some cute guy found, and he wasn't having it. Momoko is frustrated, so she leaves. Megane is about to give her some tips for getting a guy to like her, when the girls' compact belts ring. The girls rush to the top of the school roof, and transform into the Powerpuff Girls Z. Only... they can't do anything beyond that. Can't fly, their weapons are gone, and they're stuck on top of a roof with no way down.
Ryousuke threatened to kill Utonium's son and wife if he didn't tell them the girls' secret identities, so in order to protect his family, he revealed the girls' true identities to Ryousuke. Ryousuke's super computer detected the girls and the Chemical Z inside of them, and Ryousuke found a way to dim the effects of the Z-Rays so that their powers wouldn't work. Then he kills them.
Yes, everyone. In the first episode of Powerpuff Girls Z: The Infinity Saga... the Powerpuff Girls Z are killed.
Momoko wakes up in a white void. Sitting opposite of her is a familiar figure. It's... Megane!? Only... she's not wearing her glasses. And her outfit is FAR different from what she was wearing at school earlier.
Megane reveals her real identity to Momoko, as Megami, aka HER. Basically, she's the God of this universe. She gives some exposition about the multiverse, and then kisses Momoko's ring. This not only gives Momoko her powers back, but also gives her a significant power boost, as well as some other cool things we'll get to see soon. Then she sends Momoko back to the mortal realm, and heads back to Earth herself.
Momoko/Hyper Blossom gasps awake. The school day is over, and all the kids rush out of the school. She sees Megane, and flies down to explain her situation. Megane doesn't understand what's going on, but she agrees to help.
They see Ryousuke entering an abandoned warehouse with what looks like Bubbles and Buttercup, so Blossom flies down to investigate.
Before they can find anything of merit, however, Ryousuke discovers them, and begins his attack. Blossom tries to hit the guy with her yoyo, only for it to prove ineffectual, and any melee attacks she pulls only seem to give him an opening to attack. Then... just as she's pulled to the brink of death again, she feels a great power within her. A power unlike anything else she's felt. This wasn't just a mere superhuman power. This... was the power of a god.
She pulls out her hairbow, and it hardens, turning into a sword, and dashes at her enemy. A few minutes of some really good fight choreography and animation later, Ryousuke is all but dead, but so are Bubbles and Buttercup. Blossom carries the corpses of her two best friends out of the warehouse, tears in her eyes. Megane disappears, likely to Heaven to talk to the other two and give them their power boosts. A few hours later, they come back to life, and episode one ends.
