Asuka II is Meimei's classmate; the monitor.He is very smart, has excellent academic performance, but poor sports performance.He has a great sense of justice and often claims to be a detective, but his personality is not calm enough.He is rather proud, but his hands and feet are a bit clumsy, and he is least able to deal with women (according to his deceased grandfather, his family has nothing to do with women).He lives with his father, Detective Asuka, and everyone calls him Asuka II.Asuka II really wants to capture the Phantom Thief St. Tail (Saint Girl) and reveal her true identity.Because Asuka II once helped the police handle a case, he received a medal that allowed him to go anywhere to investigate the phantom thief St. Tail (Saint Girl).Every time he takes action, he will receive a notice (notice) from the phantom thief St. Tail (Saint Girl).Even so, he still couldn't capture the phantom thief St. Tail (Saint Girl); Asuka II has an impulsive personality that moves faster than thinking, and is emotionally slow (often called a big wood by Memi).In school, she often quarreled with Yamei and was often beaten by Yamei.Afterwards, he faced up to his feelings for Ami and confessed to her.Later, due to the calculations of the immortal mother and daughter, she discovered the true identity of the phantom thief St. Tail (Saint Maiden), and felt angry that Yuqiu Meimei had been playing with her. While being illegally imprisoned by the immortal mother and daughter, she learned that the thief St. Tail (Saint Maiden); Hanqiu Meimi) chose to forgive her after desperately coming to the rescue and the meaning behind the warning letter (notice) she had always given to herself; eight years later, he became a famous detective because he always solved the case one step ahead of the police.As a police officer, Rina Takamiya felt useless.Eight years later, Asuka also officially proposed to Hameoka Hamei, and the lovers finally got married.