Kurume Suri was a boy who appeared in the Ami&#039;s First Love anime special episode and manga side story. He got good results in many practice exams, under the pen name &quot;Mercurius,&quot; and Ami Mizuno considered him a rival. He wore thick, square-shaped glasses, and looked similar to his friend Gurio Umino.     http://www.wikimoon.org/index.php?title=Mercurius

Quiet bookworm of the Sailor Senshi Ami takes pride in her studies, but a rival naming himself "Mercurius" is suddenly outscoring her on the national exams. Combine this with a sudden love letter and a youma feeding on Ami's stress over the whole situation, and Sailor Mercury finds herself in a huge pinch.
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(Source: Anime News Network)

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