Marvel: Sign-In System – Starting with the Glint-Glint Fruit

Reincarnating into Marvel, Matthew becomes the 17-year-old adopted son of a retired veteran sheriff in the small town of Magreave. Unexpected tragedy strikes when his adoptive father suddenly dies. In grief, Matthew soon discovers that the death is far from ordinary and is shrouded in hidden complications. At that moment, his system activates, and through a sign-in reward, he obtains the Glint-Glint Fruit. Fueled by rage and hatred, Matthew embarks on a brutal path of revenge, killing everyone involved in the incident without exception. After completing his vengeance, he signs in once more and obtains the monstrous talent of Big Mom, Charlotte Linlin. From that point on, he begins an unstoppable advance across the Marvel world. When a figure radiating brilliant golden light stands high above, looking down upon the world, the so-called gods finally realize that the human from what they once considered a backward civilization has already grown to a level they can only look up to. — Description from novelcodex.org