Mizuiro is one of ichigo and kisuke's friends. he has a youthful appearance and communicates in a soft manner. his demeanor can sometimes make keigo uncomfortable when he shows respect towards him. additionally, it was revealed that mizuiro has a preference for older women, something ichigo shared with rukia at the beginning of the series. later on, along with tatsuki and keigo, mizuiro demonstrated his spiritual awareness by witnessing the departure of ishida, chad, and ichigo to hueco mundo. despite being able to attract multiple girls simultaneously (which causes keigo great envy), mizuiro has a history of suffering from depression due to loneliness. his parents' busy schedules prevent him from seeing them often, resulting in an inverted personality. although keigo was initially mizuiro's closest friend, ichigo later became the first person with whom mizuiro truly opened up.