TV-Series
Description
Sasajima Kyouya, later known as Wrath, began as a Japanese high school student and fierce defender against bullies. His violent interventions earned him social ostracization and the nickname "little ogre." In that life, he formed friendships with classmates Shunsuke Yamada and Kanata through shared gaming. Following his death in a classroom explosion, he reincarnated as the goblin Razu-Razu within a village nestled in the Mystic Mountains.

He adapted to goblin society, cherishing familial bonds and contributing through farming. Discovering his unique Weapon Creation skill shifted his role to blacksmith. This existence shattered when humans destroyed his village, enslaved him, and inflicted profound trauma, culminating in him being forced to kill and consume his younger sister. This act earned him the titles "Ally-Killer" and "Kin Eater," alongside skills like Heresy Magic and increased Taboo levels. Enslaved under the monster-tamer Buirimus, his suppressed rage ignited the Ruler Skill "Wrath," multiplying his physical and magical capabilities tenfold at the cost of his sanity. Activating this skill broke his enslavement, triggering a rampage where he slaughtered his captors, including his traitorous brother Raza-Raza, and evolved into an Oni—a solitary humanoid monster species.

His subsequent months-long frenzy, marked by wielding self-created elemental swords like the Thunder Katana Seiryuu and Flame Katana Suzaku, plus techniques such as explosive projectiles, devastated regions and earned him the moniker "Sword Demon." This rampage culminated in a battle against the Ice Dragon Nia, though external intervention ensured his survival. His sanity deteriorated until encountering Shiraori, a former classmate reincarnated as a spider, and her allies. Recognizing Shiraori's resemblance momentarily halted his assault, but a later confrontation led to his defeat. With Sophia Keren's assistance, another reincarnated classmate, his Wrath skill was sealed, restoring his rationality.

Post-recovery, gratitude led him to join the Demon Lord Ariel's forces, rising to commander of the Eighth Demon Army. His personality shifted to a calm, composed demeanor characterized by strategic empathy, yet he retained unwavering moral convictions, accepting necessary sacrifices in warfare—a contrast to his idealistic past. When inactive, his Wrath skill imposes no control issues, but activation risks permanent insanity, making him reliant on allies for suppression. His abilities include high-speed regeneration, spatial magic, extrasensory perception, resistance to elemental and psychological attacks, Parallel Will for multitasking, Naming for stat enhancement, and his signature Weapon Creation for crafting and deploying armaments.

Relationships reflect his complex history: a respectful, subordinate dynamic with Ariel; a strained-but-improving working relationship with Sophia, stemming from his past inaction against her bullying; and deep loyalty to Shiraori, supporting her controversial plans despite moral costs. His reunion with Shun revealed deep ideological rifts, as Shun's pacifism clashed with Wrath's hardened pragmatism, underscoring their divergent paths shaped by trauma.