AION
AI
The charismatic, ruthlessly philosophical leader of the Sinners. Chrono's former "brother," Aion seeks to overthrow the oppressive hierarchy of both Heaven and Hell to establish absolute free will. He is a master manipulator who orchestrates the corruption of Joshua Christopher and the kidnapping of Apostles to fuel his grand, apocalyptic rebellion. His cold, mocking intellect and absolute lack of remorse make him a terrifyingly effective big bad.
AION THROUGH THE ARCHIVE //
ASTRAL LINES & SINNERS REBELLION //
Open page →After stealing Chrono's horns centuries ago, Aion grafted them onto Joshua Christopher. The raw demonic energy corrupted Joshua's mind, granting him time-freezing capabilities while triggering disastrous chronological distortions across San Francisco.
CHRONO CRUSADE COMBAT LEDGER //
Open page →Episode 19 · San Francisco Cathedral Spire · Tragic Stallemate
Aion deployed a brainwashed Joshua to freeze time across San Francisco, using Chrono's original horns to create an impenetrable barrier.
The Breakdown
Chrono unsealed his full power to breach the time dome. Confronting Joshua atop the cathedral, Chrono refused to kill Rosette's brother, taking severe internal damage while Rosette reached Joshua to break Aion's psychological control.
Episode 20 · San Francisco Port Docks · Pyrrhic Alliance Victory
Father Remington and Duke Duffau's Pandemonium forces staged a joint assault on Aion's flagship at the San Francisco docks.
The Breakdown
Remington unleashed his divine angelic energy alongside Duffau's dark swordplay to clear the deck. However, Aion deployed Chrono's stolen horns to generate a massive shockwave, killing Duffau and severely injuring Remington.
Episode 23–24 (Series Finale) · Ruined Cathedral Ruins · Tragic Final Victory
Aion attempted to rewrite the Astral Line to destroy both Heaven and Hell, forcing Rosette to release the final seal on her pocket watch.
The Breakdown
Chrono unleashed his true Sinner form, engaging Aion in a brutal high-altitude duel over the city. Slicing off Aion's wings, Chrono destroyed his vessel. With her lifespan completely exhausted by the seal, Rosette spent her final quiet moments cradled in Chrono's arms as the sun set.
