復讐の液体メカ~10年無能を演じた俺の逆襲~

After his father is murdered by Sky City’s rulers, Jax spends ten years posing as a spoiled, useless heir. At eighteen, he enters the city’s leadership trial—and his stepfather’s death trap. Forced to reveal the ultimate liquid mech, Jax crushes an apex beast, stuns the city that mocked him, and begins his war against the sky.