|Japanese name:||五月田根 美香子|
Date of Birth: October 15
Height: 164 cm
Weight: 46 kg
Mikako is an upperclassman to Tomoki and Mitsuki and the President of the Student Council. She is Sugata's childhood friend, whom she refers to as "Ei-kun", and the heiress of a Yakuza family. She is manipulative, cunning, highly intelligent and somewhat sadistic, usually towards Tomoki. She is forced to take supplementary lessons due to "failing in morals". She also is equal to Sugata in terms of combat abilities. However, Nymph states that she has a grip power of 400kg, which serves to indicate she has a great degree of strength, especially for a normal human.
She is the chief mastermind of many schemes, and Sugata normally enlists the help of Tomoki (and occasionally some others) by persuading him to totally shut down her plans. Many of her schemes are directed to Tomoki, serving to put him in undesirable situations and humiliating him, which suggests she sees him as a toy for her personal entertainment. Nevertheless, in situations of genuine emotional distress, she can be surprisingly thoughtful (if in her own unique way); when Tomoki breaks the contract between him and Ikaros, Mikako immediately repairs their relationship and contract by ordering Ikaros to throw Tomoki into the ocean. She is shown to have romantic feelings Sugata, as shown in the anime when she asks Tomoki to choose a bride and stated she is already taken (she shows this by wrapping her arm around Sugata's and changing into a wedding dress). Another instance is shown when she gets angry when Tomoyo (Tomoki's mother) flirts with her childhood friend (it is Tomoki who suffers her wrath, in place of his mother).
Voiced by: Ayahi Takagaki (Japanese), Jamie Marchi (English)