Board Thread:Questions and Answers/@comment-183.171.124.177-20200510102150/@comment-29325824-20200510113844

The biggest boost is in things like magical powers, stamina, and lifespan, but strength does also increase, yes.

However, a big problem is that the stronger you get, the harder it gets to become even stronger. Hence why even the Demon Lord herself, after all this time, still has trouble getting stronger than all the gods.