A comic book, but a librarian

The Silent Bookstore, a library standing on a small island in Cornwall, stores countless esoteric knowledge and great arts.
After a fire, the entire bookstore was deserted and sealed off until a new bookstore manager took over on a stormy day.
Uesugi Sumire, the reincarnated person, not only reincarnated into a world stitched together by a large number of anime series, but also became a survivor of the shipwreck caused by the storm in another world. He successfully took over the Silent Bookstore and inherited the resources and knowledge of the entire library.
In order to repair his bookstore, he decided to train his own tools to become stronger and more convenient for free
Yotsuya Miko: He is a good person, although he sometimes doesn't look like a human being.
Hikigaya Hachiman: A good person, but not completely a good person. At least sometimes he is not a good person to his friends.
Goto Ichiri: A very scary person, but very nice
However, facing these evaluations
"Come and make friends... and help me get a room." said Uesugi Cheng, the master of nine arts, the master of initiation, the master of medicine, and the all-round worker.