Sachiko is an university student. Her nickname is Buko, because she has been negative about everything since she was young. Sachiko believes someday she will meet a man like in a romance manga. Her university life is boring and she spends her time reading romance manga in her room. One day, on Twitter, she meets a man who uses the user ID of Sparrow. He likes reading manga and looks like Johnny Depp. Sachiko makes a date to meet the man. She tries to change herself, but it's not so easy due to various unexpected incidents.

News about the disappearance of panties is still being covered every day. Kyosuke still wears Aiko Completo's panties to battle evil. Meanwhile, Aiko has mixed emotions and decides to get her panties back. Kyosuke suffers from the loss of Aiko's panties and disappears, but his biggest enemy yet is about to materialise.