Saitei Rank No Boken Sha, Yusha Shojo Wo Sodateru Ore Tte Su Awase No Ossan Janakatta Ka? 3 (HJ Bunko) [Light Novel]

[Machine Translation] The old man and his pupils, who are just a number to match, attack the dungeon! After a fierce battle with the world's strongest, Mizuki and his friends return to their normal student life, and their next goal is to enjoy the cultural festival! Involving Inoue, who is still an instructor for some reason, Mizuki and his students plan to sell creative confections made from dungeon ingredients as a part of the festival's entertainment. What is the worst that awaits them in the dungeon where they dive for strange ingredients such as thin blade flowers, random syrup, warm chocolate, and rain candy?

数合わせのおっさんと教え子たちがダンジョン攻略!!世界最強との激闘後、普段の学生生活に戻った瑞樹たちの次の目標は文化祭を楽しむことだった!?何故か教導官を継続中の伊上を巻き込む形で、瑞樹たちは文化祭の出し物としてダンジョン産食材を使った創作菓子の販売を計画し動き出す。薄刃華、ランダムシロップ、温チョコレートに雨飴と、奇妙な食材たちを求めて潜ったダンジョンに待ち受ける最悪とは―生存特化な伝説の男から学んだ技術と知識を活かし、才能S級女子高生のダンジョン攻略が始まる!!