Reborn As A High Schooler, But I'm A Warhammer Champion

Scolded by his aunt, seen as a weak loser, 16-year-old Lu Mingfei just wants peace after a century of hell. But those weren't nightmares; they were memories of being a Space Marine Champion. When dark shadows and mythical gods emerge from a torrential storm, his dormant Astartes instincts ignite. With a makeshift chainsaw, he's ready to purify this 'paradise' from the inside out, awakening the Emperor's wrath. This isn't the Golden Throne, it's a new warzone. Can a weakened Angel of Death survive a world filled with forgotten legends and creatures far beyond his past foes?