|Marui Zenji丸井 善二|
|Visual novels||Main character - Shokugeki no Soma: Yuujou to Kizuna no Hitosara|
|Voiced by||Kobayashi Yuusuke|
Zenji, usually going by his last name Marui, is a first-year student and resident of Polar Star. He has a bookworm-like look, with bobbed hair and oversized glasses, and is shown to have poor stamina. Among the Polar Star students, he was the most exhausted by the Summer Training Camp curriculum, comically shown to be in near-death on several occasions. Despite this, he is a very competitive chef. He has no specialization; instead, he researched cooking styles from all over the world and employs them as needed to make unique, free-style dishes.