知名動漫《航海王》（ONE PIECE）、漫畫家窪之內英策、樂團 BUMP OF CHICKEN 合作的アオハルかよ（青春）新系列「HUNGRY DAYS」最終篇就是原作最經典的橋段之一「頂上戰爭」。在前三篇角色廣告一直沒露臉的男主角魯夫，完整的面貌也在本篇公開。
頂上戰爭是原作中自大海賊時代開啟以來最大的戰役，而 HUNGRY DAYS 的頂上戰爭變成運動會騎馬打仗，海軍和海賊各代表紅和白隊，騎士倒地就會被判失敗。雖然看似很單純的運動競技遊戲在本篇影片表現得腥風血雨，基本上沒有任何學生受到殺害。
影片中的艾斯被赤犬打飛之後，右下角的日清標誌還原了《航海王》艾斯生命紙燃燒殆盡的景象，這點該稱讚製作組很細心還是充滿惡意呢。
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