修学旅行で忍者屋敷を訪れた高校生のイチは、見学中に不思議なからくりに巻き込まれ、伊賀甲賀が勢力を争う忍者の世界にタイムスリップしてしまう。現代へ帰る手がかりを求め、忍者の教育施設「紅学園」に潜入を試みたイチだが、そこは「男子禁制のくノ一学園」で……!? On a school trip to shinobi-themed Ninjatown, a young man named Ichi Kuno accidentally springs a mystical ninja trap which sends him back to the Age of the Ninja. Having no other path, he must pose as a girl and infiltrate Kurenai Academy, a school of kunoichi students, to retrieve a mystical scroll that […]

修学旅行で忍者屋敷を訪れた高校生のイチは、見学中に不思議なからくりに巻き込まれ、伊賀甲賀が勢力を争う忍者の世界にタイムスリップしてしまう。現代へ帰る手がかりを求め、忍者の教育施設「紅学園」に潜入を試みたイチだが、そこは「男子禁制のくノ一学園」で……!?

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On a school trip to shinobi-themed Ninjatown, a young man named Ichi Kuno accidentally springs a mystical ninja trap which sends him back to the Age of the Ninja. Having no other path, he must pose as a girl and infiltrate Kurenai Academy, a school of kunoichi students, to retrieve a mystical scroll that can return him to the future. But when everyone around him is already far better at stealth and infiltration than he could ever imagine being, it's not going to be easy. He'll need to employ his own special bag of tricks, and have a lot of luck, if he's going to last more than 5 minutes surrounded by hot kunoichi girls, every one of whom would happily kill him in a moment if he's discovered. [Tonari no Young Jump releases](https://tonarinoyj.jp/episode/10834108156633005367) The artist publishes hentai doujinshi for the series on fanbox.