Kyoushoku Soukou Guyver II

When a normal high school student stumbles upon a mysterious alien artifact, his life is irrevocably changed. The relic, known as the Guyver, fuses with him, transforming him into a formidable bio-boosted armored warrior. This sudden, terrifying power thrusts him into a secret war between ancient alien creators and their monstrous creations, the Zoanoids, who are bent on reclaiming the Guyver unit. Now, humanity's fate rests on the shoulders of this unlikely hero. He must master his new, gruesome abilities to combat grotesque genetic abominations and uncover the truth behind the Guyver and its connection to Earth's origins, all while trying to maintain a semblance of his former life. Prepare for a visceral adventure where every battle is a fight for survival, and the lines between man and monster blur.

✦ AI-drafted summary