Kurume Suri  

Mercurius, 数理くるめ

Mercurius was a boy who appeared in the Ami's First Love anime special episode and manga side story. He did well on many practice exams under his pseudonym, "Mercurius." Ami Mizuno saw him as a rival. He had thick glasses with a square shape that resembled Gurio Umino's appearance. You can learn more about Mercurius at wikimoon.org/index.php?title=Mercurius>.