Heroine: Yui Uchishima (lesbian) 17 years old
Actor: Nakano Kawai (a university teacher seconded to Yamada Imperial High School - Geography teacher and class teacher of Class 4, Grade 2, Yamada Imperial High School) 26 years old
Supporting Actress 1: Karina (the monitor of Class 4, Xiao Wei's crush and good friend), 17 years old
Supporting Actress 2: Naoko Eshita (Nakano's fiancée, Xiao Wei's psychotherapist) 24 years old
Supporting Actor 1: Gao Hao Kenji (Xiao Wei's classmate) 18 years old
Summary of the story: Yui Uchishima, who is studying at Yamada Royal High School, is a sweet and charming girl, but she has a different heart than her appearance. Beneath her taciturn appearance, she has been hiding a secret in her heart that only she knows. Later, two more people gradually joined the team of secret knowers. One was Naoko Eshita, a doctor at Yamada Miyagi University School of Medicine. She had already had three thoughts of providing psychological counseling to Xiao Wei; the other was the male protagonist of the show, Kawai Nakano, who has an upright character and strives for perfection in everything he does. After discovering the secret in Xiao Wei's heart, Zhong Ye also began to move step by step towards a changed life...