Lei, Xiaoyu

雷小幽

Xiaoyu Lei, a former member of the Heilei, now serves the Shinoyama Clan. His current duty is to protect Sayo Shinoyama while she stays with the impostor posing as her half-uncle. Upon introduction, Xiaoyu appears capable, eager to please, and humble. Beneath this agreeable exterior, however, he harbors murderous intent toward both the Polka impostor and the real Polka Shinoyama. He views the impostor as an inherent threat to the Shinoyama family. His grudge against Polka stems from his filial devotion to Rozan Shinoyama; he has long been jealous of Polka for receiving Rozan's fatherly affection. Over time, this resentment has grown into a superiority complex, leading him to believe he is the truly useful son to Rozan and more deserving of that role than the inferior Polka.
Xiaoyu is extremely stubborn in his suspicions and convictions, determined to doubt or even assume the worst about the fake Polka, even after Rozan states he trusts the impostor. This stubbornness arises from his personal jealousies and his extreme devotion to the Shinoyamas, both of which fuel his need to prove himself as an ideal bodyguard, servant, and 'son'. He is proactive in his goals and intensely suspicious, to the point of being comical at times, as evidenced by his eavesdropping and frequent late-night activities. To Xiaoyu's credit, his pride and self-confidence enable him to stand his ground against the Heilei and openly reject his blood family.