If you're wondering whether Wapol had a brother, well, apparently he does. Just wasn't part of canon.
__
Wapol glared at his enraged brother, Mushuru.
"Stop directing your anger at the dying," Wapol scolded. "Let the living tremble under our power." He glared toward the castle's ruined entrance, teeth clenched. "That witch dared defile my castle—I'll make her pay!"
"A–it's you!" Mushuru snarled, stepping beside Wapol. "I told you not to call me 'big brother' anymore, you fool!"
Wapol rubbed the back of his neck. "I know, big brother."
---
Inside the courtyard, Shirogai and Luffy stood back-to-back—Chopper cowering behind them.
[Host observed: User of the Germ-Germ Fruit. Comprehended: the ability to release and absorb highly toxic spores.]
Luffy's eyes blazed as he took in the sight of Sanji, Usopp, and Dalton lying motionless.
"Sanji! Usopp! Dalton!" he shouted, rage boiling in his chest.
They offered no response.
Mushuru puffed up his chest, swaggering into the open. "They fell to me—Musshuru, wielder of the strongest Devil Fruit, the Germ‑Germ Fruit!"
Luffy gritted his teeth. "You hurt my friends—I'll get revenge!" He launched into attack, arms swinging in a barrage.
"Gum-Gum Gatling!" Luffy roared.
Mushuru laughed and unleashed his response: toxic spores erupted in dozens of small blistering bombs.
"Sporestorm Barrage!"
Their Devil Fruit powers clashed midair, shaking the ground. Luffy was struck and knocked back, landing hard.
Mushuru staggered too, grinning. Their strength was evenly matched.
---
Meanwhile, Shirogai moved past Wapol and his troops. He knelt beside the poisoned trio and pressed his palms to their foreheads. Slowly, he drew a dark mist from their bodies using his newly acquired Germ‑Germ abilities. Their nausea faded and color returned.
"Chopper, catch them," Shirogai ordered, gently tossing each injured friend to the reindeer.
"Wha? Shirogai, don't treat them like rag dolls!" Chopper‑san transformed into his larger form and caught them clumsily.
Shirogai smiled. "Take them inside for treatment. Luffy and I will handle this."
Chopper hesitated. "But they're really strong, right?"
Shirogai laughed. "Don't worry—I'm stronger."
Boom!
A cannonball hit, sending Chopper's eyes wide as he watched Shirogai stand unscathed amid flying debris.
"Shirogai!" Chopper gasped, before turning to carry the injured inside.
---
Wapol's jaw dropped in disbelief. His arm‑cannon shook as he muttered, "Why wasn't he hurt? Did the snow break the shot?"
He raised his cannon again and fired a second. The soldier beside him exploded.
"He's not broken!" Wapol exclaimed, then refocused on Shirogai. "Five‑shot cannon—this'll finish him!"
He unleashed five rapid cannonballs.
"Finger Cut!" Shirogai flicked his finger like a blade. The cannonballs shattered midair, raining fragments harmlessly.
Wapol stared, stunned. "This power..."
He barked orders at Chess and Kuromarimo. "Go finish him!"
"Uh, us?" they mumbled, terrified as Wapol pointed his cannon at them.
"Drum Kingdom Law, Article One—defy the king and you die!" Wapol bellowed.
They gulped and charged, praying they'd get to Shirogai before Mushuru took care of Luffy.
But Shirogai didn't move—his attention remained on the battle at hand.
---
Back in the courtyard, Luffy launched a surprise kick.
"Gum-Gum Revolving Drill!" he yelled.
Mushuru responded with a sweep. "Too slow!" he sneered.
Luffy's punch hit, transforming Mushuru's spores into a cloud momentarily—but his true form reappeared behind Luffy.
"Fungi Burst!" Mushuru shouted, triggering a spore eruption that spread across Luffy's body.
"What is this?!"
Luffy was immobilized, trapped in a mass of mushrooms. Slowly, Mushuru raised his hands.
"Poison Spore Cloud!"
Luffy attempted to hold his breath. "Gum-Gum Hold Breath!" but spores penetrated his pores.
When the fog cleared, Luffy lay motionless, poisoned and pale—on the brink.
Mushuru laughed triumphantly. "I, wielder of the Germ-Germ Fruit, am invincible!"
He turned to face Shirogai. "Now it's your turn! Kneel and prepare for death!"
Shirogai smirked. "Oh really? Terrifying." He extended his hand, finger crooked. "Come at me."
---