Angel Beats! - Heaven's Door

So, he took the shadow guy’s arm. And he gets to keep it. Metal.

Lowkey kinda miss the goddess of sex.

fine adult women enjoyers rise up

I NEED MORE CHAPTER PLEASE

If it helps, just remember that sort of stuff happened in medieval history all the time. Even until the 1970s and 1980s it was common for men in their thirties to marry girls aged 16 or 17 even in America.

I do believe It's a completely unintentional error, but it's most likely a grammatical oversight. To me it seems to be either a oversight due to not paying attention or quite frankly not caring enough, otherwise alternatively it could be a mistranslation (which also falls under a oversight).
It's a simple issue with semantics that could easily be solved by changing a single word. If you simply replace "by" with "to" the statement instead becomes an instant accelerator rather than a growth speed modifier.

However, I don't really think you should spend too much time trying to critique the logical errors within a skill panel.
This is especially true in this case considering they just throw around high percentages like 1000% seemingly at random.

Although.. I'm not sure if you've caught up yet, but if you have and still can't tell this manhwa shouldn't be taken too seriously then I feel as though we have bigger issues than the contents of the skill's description.

Indeed

In the author's defense...I'd probably do that too if the publisher just let me and the people were still enjoying it.

I could be wrong but I could have sworn they made this already before

YEAH

it got shown in the chapters that go into her backstory

sorry 101 chapters