Rizu is a genius with math and science but terrible with liberal arts.
She is very short at 143 cm (4 feet 8 inches), yet has the biggest bust size among the female protagonists at F cup, and possibly G when she measured it again in chapter 44. She becomes an H cup by the time she reaches freshman year at college.
In "Thumbelina Supercomputer" route, She and Nariyuki Yuiga are dating
She is very short at 143 cm (4 feet 8 inches), yet has the biggest bust size among the female protagonists at F cup, and possibly G when she measured