Forgot to mention, but chapter 104 in the lightnovel explains the servant's enhanced hearing a bit more.
Here is a small excerpt from this chapter. (This is not a spoiler):
Come to think of it, I've asked about the matter long ago because they reported that even my smallest sounds could be heard clearly. At the time, Seo Dawon hypothesized that the servents were sensitive to every small sound from my lips because they were usually summoned by calling their name.
In other words, it's not that I'm particularly noisy but that the system is at fault. It was utterly unfair; I clenched my fist, appalled and mortified that I was unintentionally wreaking auditory havoc upon their ears.
Here is a small excerpt from this chapter. (This is not a spoiler):
Come to think of it, I've asked about the matter long ago because they reported that even my smallest sounds could be heard clearly. At the time, Seo Dawon hypothesized that the servents were sensitive to every small sound from my lips because they were usually summoned by calling their name.
In other words, it's not that I'm particularly noisy but that the system is at fault. It was utterly unfair; I clenched my fist, appalled and mortified that I was unintentionally wreaking auditory havoc upon their ears.
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