Summary
Born on September 18th under the Virgo sign with blood type A, Nikaidou Yuu is a former employee of Easter Company who infiltrated Seiyo Elementary to locate the Embryo. He assumed the role of Amu’s class teacher, adopting the persona of a ditzy yet kind-hearted educator. His past is marked by a childhood ambition to become a robot engineer, a dream he abandoned after his mentor resigned due to his wife’s poor health and his parents voiced their opposition. This loss of direction twisted his character until Amu and Suu helped him recover. Following his departure from Easter Company, he officially took up the teaching position in Amu’s class. He has a running joke of referring to Amu as Himamori, which translates to "leisure time."
