Satoshi Mashiba is the boyfriend of Miki Kawai. They met in high school and immediately began dating. Satoshi always has a sly, unnerving look, but is actually quite friendly and amicable. Satoshi wants to graduate high school and enter college to become a teacher. Miki adores him, and has told him that she will follow him to whatever college he goes to, so as to be with him all during his college years.