水島 あきら

She is Masaru's classmate and, arguably, his "main ******e".
Her eyes are always droopy and she's a problem child who often has to take supplementary lessons along with Masaru.
She spaces out all the time, and drives Masaru up on the wall by always playing dumb. In short she's a girl who's tough to handle.
She often gives off the impression of being indifferent, but on a whim, she occasionally shows that she's got sharp intuition.
Akira is somehow aloof from the world, which creates discrepancy between her and her surroundings, causing her to be left out from class. Aside from Ousei Yumiko, her childhood friend, she doesn't mingle with others.
She usually kills time by strolling around town until very late.
Even though her and Masaru's personalities are poles apart, she claims that they are holding an inseparable relationship with each other (so called "supplementary class comrades"), and he has often been caught by Akira during her strolls, whereas she also weasels her way to get treated for food by him.