Older Brother

Older Brother is a male demon with a bizarre hybrid form, combining a spider-like body and a human head.

He lives in the mountains, residing inside a hut that hangs suspended within a giant spiderweb.

He is part of a twisted “family” of spider-themed demons.

He looks down on and mocks Mother, showing a cruel and contemptuous attitude even toward his own group.

Older Brother’s most striking feature is his spider torso with a human head attached, giving him a monstrous and unsettling silhouette.

He typically keeps himself inside a floating hut woven into an enormous spiderweb, staying above the ground like a lurking predator.

His personality is sadistic and mocking.

He takes pleasure in belittling Mother and in tormenting his victims, treating humans as mere playthings or raw material for his blood demon arts.

Blood Demon Arts

Older Brother possesses a blood demon art that turns anyone who is contaminated by his poison into a “spider” servant.

These transformed victims become spider-human hybrids that he can control and use in battle.

He also wields a blood demon art called “Spotted Poison Phlegm.”

With this technique, he spits highly corrosive, strongly acidic poison, capable of melting and incapacitating opponents.

Combat Style

Older Brother fights from a distance and from above, using his spider-human minions to inject poison into enemies.

His strategy relies on wearing down opponents with venom and controlling the battlefield from the safety of his web-bound hut.

Despite his arrogance, he is cautious when an enemy’s demeanor shifts.

When Zenitsu Agatsuma’s atmosphere suddenly changes mid-battle, Older Brother becomes wary and attempts a serious counterattack.

Older Brother confronts Zenitsu Agatsuma during the mountain mission, where multiple spider-like demons appear.

He commands a swarm of spider-human hybrids, ordering them to inject his poison into Zenitsu.

As the poison spreads, Zenitsu grows weaker and seems close to collapse.

However, Zenitsu suddenly shifts into a composed, focused state, completely altering the mood of the battle.

Older Brother tries to respond to this new threat, attacking in earnest and relying on his poison and minions.

Even so, Zenitsu unleashes Thunderclap and Flash, Sixfold, dashing in an instant and decapitating Older Brother before he can react.