Dragon Ball GT: What’s Wrong with an Angel Taking on a Few Disciples?

Karo transmigrated into the GT era of the Dragon Ball world and became the only angel there. At the same time, he awakened an apprenticeship System: the more disciples he takes, the greater the rewards. How could he possibly pass up such a good deal? “Congratulations, Lord Karo, on taking Son Goku as your disciple. You have received teleportation with unlimited range.” “Congratulations, Lord Karo, on taking Vegeta as your disciple. You have received the ultimate power of destruction.” “Congratulations, Lord Karo, on taking Broly as your disciple. You have received the power of time and space, allowing you to travel freely to other timelines.” “Congratulations, Lord Karo, on taking Zeno as your disciple. You have become the new supreme ruler of the multiverse, the master of all things.” Seeing the rewards granted by the apprenticeship System, Karo was completely dumbfounded. He'd only taken a few disciples on a whim. How did I end up becoming the new Zeno???