Speedrunning Crossover Games with World-Shaking Wisdom

Pulling all-nighters, dying suddenly, transmigrating: he became a [Player] traveling through one otherworld after another, and inherited the debt left behind by the previous owner of his [game account]. A whopping 36 million! If he can't pay it back, he'll have to undergo the dreaded path of the second son, feared even by Martial Gods! Luckily, he has the scripts for these other worlds. And so... [JOJO2] Equip the [Treasure-Seeking Mouse] template, summon a door to anywhere, obtain the [Stand Arrow] and awaken a [Stand], then let the Pillar Men feel the iron fist of the new age. [Jujutsu Kaisen] Use a Binding: in exchange for only being able to exist in the world for one hour, gain a 99% chance of landing a [Black Flash]. Speedrun the Jujutsu Society in an hour and usher in the age of massive loans. [Dandadan] Learn sealing techniques, use the Stand Silver Chariot as a vessel to seal an evil spirit with the power of super speed, create an evil-spirit jinchuriki, and become the city's fastest legend. ...After clearing countless instances, there's no time to mourn the poor soul saddled with debt. Now entering the stage: the wielder of Star Platinum: Over Heaven, a speedster racing along the timelines... The one and only master of the Root and the Holy Grail!