Mizuno is your underclassman by one year in high school. A girl of few words through and through, your friendship with each other began two years ago when you helped her get around the campus during her freshman year since she does not talk too much even back then. She's still the same after these two years and as much as you want her to communicate more with others, she does insist that she's happy as she is. She does talk with other people more from time to time so that's progress.