Erotic Game No Yujin Kyara Ni Tensei Shitakedo, Game Chishiki Tsukatte Jiyu Ni Ikiru Magical Explorer 6 (Kadokawa Sneaker Bunko) [Light Novel]

[Machine Translation] In the depths of the dungeon, Sei Iori discovers a certain document. It describes a legendary item called "The Book of Radiel," which contains the truth of all things. If this book is misused, it could lead to a world war. The Sankai, seeing the gravity of the situation, quickly investigates and discovers that the librarian, Rui Sakura, is the Archangel Raziel! The school deploys all its resources to clean up the situation, but they are unable to stand up to her overwhelming magical power and are overrun... ( Hey, Iori. Thanks for the wait. (... You're late, Kousuke-kun. ) Takioto rushes to the scene of a desperate crisis and confronts Rui Sakura once again! Can he change the world's worst bad ending, the collapse of the world?

聖伊織はダンジョンの深層でとある文献を発見する。そこには万物の理が収められているという伝説のアイテム『ラジエルの書』について記されていた。この書物が悪用されれば世界大戦にも繋がりかねない。事態を重く見た三会は早急に調査へと踏み切り、司書の桜瑠依が大天使ラジエルであるということを突き止める!学園は総力をあげ掃討作戦を展開するも、その圧倒的な魔力の前に歯が立たず蹂躙されてしまうのだが―「よお、伊織。待たせたな」「...遅いよ、幸助君」絶体絶命の危機に駆けつけた瀧音は再び桜瑠依と対峙する!世界崩壊という最悪のバッドエンドを塗り変えられるのか!?