Missing Books

[InfyHeartz]

Im not sure if im in the right section huuu.
Anyways, So im in the post game and i cant find the other books, kinda weird tho cause those books are supposed to be unmissable in story playthrough. The books i have now is:
Book 3 - From Koakuma
Book 5 - Tournament, Old Hell
Book 6 - Yuuka's House
Book 7 - From Byakuren
Book 8 - Netherworld Event
Book 9 - Shining Needle Castle Event
In my theory, I think Kosuzu stole it, but she won't talk to me, (maybe a bug perhaps). Did anyone encounter this problem yet? Hopefully someone can help me huuu...
I also defeated Shinki the 2nd time.

Problem Solved, this topic can be removed now. Thanks everyone!

[Amenomori]

Hmm, what does Kosuzu say? Like, what books does she have?

[InfyHeartz]

She doesnt talk, like if u pressed the talk button she just look at u, then nothing else, no dialog box appear.

[Amenomori]

That definitely is weird...

It does feel like a bug.

[jhun]

Well, I also experienced it. But after updating the game, she now talks and lets you do the read the book thingy