[Slightly hardcore] + [A huge number of self-created academies and students] + [With both angst and sweet moments] + [Daily life/battle]...

Thirty years ago, the Seventeenth Joint Campus was destroyed by an unknown force, turning the once prosperous academy into a desolate ruin. Our forefathers fought desperately during the catastrophe, sacrificing their lives to give their descendants a chance to survive. However, the survivors still wander among the ruins, lost, helpless, and uncertain of the future.

Just as despair was spreading, a firm voice rang out:

"Reconstruction, revival, revenge."

Guided by this brief yet powerful message, the students of Campus 17 wiped away their tears and rose again. They rebuilt their homes from the ruins, unearthing buried scientific discoveries from the depths of the rubble, etching the tragedy into their hearts and transforming past pain into motivation for progress. Beneath the wasteland lies not only a shattered civilization, but also revelations powerful enough to change the future.

Thirty years later, when a similar disaster struck another school known as "Children's Eden," the students of the Seventeenth Campus resolutely raised the blade of revenge. They were no longer helpless survivors, but fighters who had overcome the shadow of death. With thirty years of accumulated experience and the strength forged from the ruins, they would safeguard hope and reverse their fate.

"The past belongs to history, but we remember it."

"What is now ruins, we will rebuild."

"The future belongs to hope, and we create it."

The Silent Bookstore, a library perched on a small island in Cornwall, houses countless secret teachings and profound techniques. After a devastating fire, the entire bookstore was deserted and sealed off until a new librarian took office on a stormy day. Uesugi Sumi, a reincarnated individual, not only found himself in a world pieced together from numerous anime series, but also became a survivor of a shipwreck brought by the storm in another world. He successfully took over the Silent Bookstore, inheriting the library's resources and knowledge. To repair his bookstore, he decided to cultivate his own "tools" to make it easier to get freebies. Yotsuya Miko: He's a good person, though sometimes he doesn't seem quite human. Hikigaya Hachiman: A good person, but not entirely good; at least sometimes he doesn't seem like a good person to his friends. Goto Ichiri: A terrifying person, but very kind. Faced with these assessments, Uesugi Sumi, a master of nine arts, a master of initiation, a master of medicine, and an all-around worker, said, "Let's make friends... and get me a room while you're at it."