Mari Imari (伊万里 毬, Imari Mari) is a senior classman of Hakoniwa Academy and one of the delinquents who originally made up both the Kendo Club and the 2% of the votes that Medaka Kurokami did not receive.
Imari ignores the great majority of school rules, instead hanging out in the kendo hall with his friends. Like the rest of his gang, he smokes. After Medaka's intervention however, he seems to have reformed somewhat, and the passion for kendo he once had has been rekindled.
Imari foregoes the uniform of a student of Hakoniwa Academy, instead wearing a gray shirt and dark pants. His brown hair is styled to stick forward, and he has a small scar on the lower part of his left cheek. He is also seen in his kendo uniform.
Student Council Executive Arc
Imari is hanging out at the Kendo Hall when Medaka and Zenkichi Hitoyoshi arrive. At Mahibi Moji's order, he and the others surround the pair. He is amazed when Medaka manages to confiscate the cigarettes of everyone present before they can react. He is horrified when Medaka declares she will reform all of them. The next day, the group returns to the kendo hall in uniform, much to Zenkichi's surprise. After Medaka leaves to attend the Student Council Recruitment meeting, the Kendo Club is attacked by Habataki Hyūga, who defeats them all. To Hyūga's shock, Moji gets back up, proclaiming that even he was once passionate about kendo. Inspired, the other members rise back up as well. An enraged Hyūga attacks them, only to be stopped by Zenkichi. After being "converted" by Medaka, Hyūga takes over the Kendo Club and shares the hall with the other members, though he and Moji sometimes butt heads.
Imari is seen being chastised along with Kenna Yatsushiro, Hisshuu Kanoya, and other members of the Kendo Club by Harigane Onigase of the Public Morals Committee for their improper clothing. Despite her warnings, Imari and his friends brush Onigase off. After Myouri Unzen blows up the Student Council office, Imari and several other members of the Kendo Club hear the commotion, though they assume it is simply Medaka being up to her usual antics.
Kumagawa Incident Arc
At the end of the semester, Imari is present for Medaka's speech. He is surprised by Misogi Kumagawa's sudden entrance, and declaration that he is Medaka's ex. On August fifteenth, Imari is among the students who come to the Vice-President's Battle to cheer for Kuudou Hinokage. On August twenty-second, Imari and other students try to attend the President's Battle to cheer for Medaka, but are unable due to the nature of the match.
Kurokami Medaka's Successor Arc
Bouquet Toss To The Future Arc
Imari is among the students who confront Medaka at the beginning of the 100 Flowers Run, holding flower number eleven. He and the others are all blown away by Medaka's Kurokami Final. All present wonder if Medaka thinks of their time together as good memories. His message to Medaka is to not try the impossible.
Differences Between Anime and Manga
In the anime, Imari is not present when the Kendo Club hear Unzen's attack on the Student Council. Instead, he is replaced by the other members of the Kendo Club.