Aoki

青木

Aoki serves as the fourth butler and financial manager for the Yotsuba family.
He is characterized as a shrewd and capable gentleman in the prime of his life, appearing more like a lawyer than a traditional butler.
Although he shows extreme respect when speaking to Miyuki, he regards her older brother Tatsuya as merely a Yotsuba servant. Consequently, he blatantly ignores or is rude toward him, which greatly angers Miyuki.