After quickly packing his belongings, Atum bid Frank farewell. He knew how to return favors; not because he cared about repaying but because it was necessary in order to get other favors in the future. As a Supremacy Phase cultivator, he had enough money to pay for twenty years' worth of rent.
"I will be going then. See you later when I pay for everything."
The bulk of his payment wasn't just for rent; it primarily covered Frank's extensive healing expenses. Since he returned in a broken state, Frank had to expend quite a few rare materials and pills to get him back to life, even going as far as participating in an auction for an eighth-grade pill.
"I will be waiting, bye-bye."
Atum kicked the ground and disappeared, starting his long trip toward the border with the Serene Lotus Sect. Back in the day, he looked down on the young kid and did not bother asking for his name, but he found out about Ken's identity since then.