Miku Oshima (大嶋みく) is a Japanese gravure idol and a founding first-generation member of BOCCHI。, represented by GDL Entertainment. Her official agency profile lists a birth date of July 19, 2000, Chiba Prefecture as her birthplace, blood type O, a height of 145 cm, and professionally disclosed measurements of B90/W56/H84. Her interests include cooking and watching films, and her background includes competitive cheer dance. Weekly Playboy reported that she was scheduled to graduate from BOCCHI。 on September 21, 2026.