五島 雫

She is a university student who attends the same university as the main character. Since they have known each other since childhood, she is like a caretaker to the main character.

She is always a cool beauty with a keen eye. She used to have a complex about her small breasts, but now she is often admired for her big breasts.

She has a firm tone of voice like a female commander and a very coercive tone towards the main character. She also isn't afraid of getting physical if need be.