Happosai was raiding so many houses across Nerima that he carried a bag on his back containing 130,000,000 bras and panties!

Happosai: WHAT A HAUL! WHAT A HAUL!!

He snuck back into the Tendo Dojo, and proceeded to stick his face into all of his favorites!

He even had the bra and panties of Kodachi, all the girls of Furinkan High, Shampoo, Akane, Nabiki, Kasumi, Ruby, Weiss, Blake, and Yang!

Happosai: I sure have a lot on my hands! I should give myself a pat on the back!

(Y/N): HAPPOSAI!

Happosai: (Y/N) my Boy! How are you this fine day?

(Y/N): Don't get chummy with me you old bastard! We're here to make sure you don't bug any girls here!

You had Team RWBY, Ranma, and Akane with you!

Ranma: Yeah! So get lost you old goat!

Happosai: Well, you'll have to stop me first! That is if you can catch me.

But then Yang flashed him with her breasts.

Happosai: OH HELL YEAH BABY! HERE I CO-

Akane hit him with a big mallet!

Happosai: AGH! HOW DARE YOU!! I WILL NOT LET YOU GET AWAY WITH THIS!!

(Y/N): HA! Unlikely!

Happosai: YOU! YOU BASTARD!! (Y/N) (L/N), YOU ARE NOW MY SWORN ENEMY! I WILL DESTROY YOU!!

He grew to the size of a Titan and-

(Y/N): I WON'T LET YOU HURT MY FRIENDS OR MY GIRLS!!

Happosai: I AM A GOD! YOU CANNOT DEFEAT ME!

(Y/N): God?! You are no God, you sorry excuse for a martial artist!

You transformed into SSJ3 and Nika together and-

(Y/N): HAHAHAHAHAHAHAHAHAHA! GUM GUM DAWN PISTOL!!!

You punched him in the face, and he bled!

Happosai: AAARGH!! ONCE YOU DIE I WILL HAVE ALL THE WOMEN I WANT!! INCLUDING YOUR BEAUTIFUL GODDESSES! Now-

(Y/N): SHUT UP YOU OLD FART!!

You inflated your fist and-

(Y/N): GUM GUM BARAJANG DETROIT SMASH!!!

Happosai: WHAT?! NOOOOOOOOO!!!

You punched him, and he was defeated!

Happosai went back to his normal size!

And he was out of all of his strength!

Happosai: Such ... beautiful angels. How beautiful.

Genma: "HE DID IT!"

Soun: (Y/N), I would be proud to call you my Son!

Soun was crying tears of joy!

(Y/N): Now-

You put a seal on him.

(Y/N): You will stay bound into this box.

You put him inside the box.

(Y/N): Good riddance to you!

Everyone cheered for you, and well-

(Y/N): This feels great!

Girls: Hooray for (Y/N)!

Ranma: You rock alright!

Meanwhile...

A masked figure with a big spatula on their back arrived in Nerima.

???: Ranma, I'll make you pay. You and your father!