Please refer to the Director's Note in the description.

Yuumei is an earnest, intelligent, and inquisitive young lady. But because she is always nose-deep in a book with her mind forever occupied, she can only be best described as someone perpetually out of the loop. Yuumei is constantly unaware of the world around her. On the rare occasion that she is aware of what's happening, she seemingly gets roped into shenanigans, either against her will or against her better judgement.

Yuumei's voice is very high-pitched, with a mousy quality about it. Very light and feathery with a distracted, confused tone. Her thoughts are almost always stuck in translation, so she normally speaks in fragments and incomplete sentences. Thanks to this, many people find her a bit odd.