Here's a complete response based on your scenario, "a baby Joy discovers Aqua's water powers and gets excited", along with all the requested endings and story elements:

Title: "Splash of Joy"

Genres: Comedy, Fantasy, Slice of Life, Supernatural

30-worded Summary:
When baby Joy stumbles upon Aqua's magical water powers, chaos and cuteness flood the neighborhood! Whether a splash war, disaster, or dream, Joy's joy is about to soak everyone—literally!

Scenario:

In the sunny backyards of Chaville, baby Joy waddles curiously toward a sparkling puddle left behind by Aqua. The blue cockroach hums gently, forming playful shapes out of water using her powers. Joy's eyes widen with delight as the water twirls like a ribbon. She giggles and claps, unintentionally causing Aqua to overdo it—sending a geyser of water into the air.

Bad Ending (with dialogue):

Aqua: "Wait, Joy! Not the valve—!"

Joy twists a strange coral-shaped handle. Water explodes, flooding Chaville.

Jack: "My basement lab!"

Bob: "Oggy! I swear if this is your fault again—!"

Everything submerges underwater as the town turns into a swamp.

Good Ending (with dialogue):

Aqua: "Aw, she loves it! Here, have a splashy dolphin!"

She shapes the water into a dolphin that dances around Joy.

Joy: (giggles, claps) "Bwooosh!"

Oggy: "Looks like we found her favorite babysitter."

Funny Ending (with dialogue):

Joy starts giggling so hard, her babbling mimics dolphin squeals. Aqua accidentally creates a giant water slide from Jack's roof.

Jack (sliding off screaming): "This isn't how gravity works!"

Joy: "Wheee!"

Sad Ending (with dialogue):

Joy hugs a small puddle, thinking Aqua left.

Joy: (whimpering) "Bwaaa…"

Aqua, exhausted from overuse, fades temporarily into mist.

Joy: (sniffles, babbles) "Wata... come back?"

Scary Ending (with dialogue):

A dark shadow rises from the water Joy splashed.

Aqua (shocked): "That's not mine… That's something ancient…"

A monstrous water entity looms.

Joy: (wide-eyed) "Uh-oh."

Bloody and Gory Ending (with dialogue):

Joy unknowingly summons a water blade. It slices through Jack's latest invention, which explodes violently.

Jack: "MY FACE! MY BLUEPRINTS! MY EYEBROWS!"

Bob (drenched in red punch): "Tell me that's juice…"

Aqua (horrified): "That wasn't supposed to happen!"

Death/Dead Ending (with dialogue):

Aqua's powers overload. The swirling water swallows Joy.

Aqua (screaming): "NO! JOY!"

Silence. Only ripples remain.

Monica: "She was just a baby…"

Sci-Fi Ending (with dialogue):

Joy touches the water. A hologram emerges:

Computer Voice: "Activating Aqua Core Prototype."

Jack: "Wait… she just unlocked alien tech!?"

Joy (with glowing eyes): "Wawa… power!"

Romantic Ending (with dialogue):

Aqua crafts a heart-shaped water fountain. Joy splashes it toward two unsuspecting roaches—Joey Jr. and Jena—who blush.

Joey Jr.: "Uh... t-that was cute."

Jena: "Your baby cousin's a matchmaker!"

Joy: (giggles and claps) "Wuv!"

Would you like illustrations for any of these endings or character interactions?