Yotsuyama Bionics Catalogue

Pages of the Yotsuyama Bionics Catalogue can be found throughout The Tower of Barbs. They detail the history and development of each type of Tuber. Collected pages can be viewed in the Underworld Rolodex.

Page	Floor	Area	Location
1	N/A	N/A	Page is automatically collected.
2	N/A	N/A	Page is automatically collected.
3	13	Kamoto	Outside with the tall stacks of cargo containers and two dump trucks. Keep jumping through and on cargo containers to reach a hidden area.
4	16	Kaga	On top of a container in the boss fight area
5	23	Honkawa	In the room with scratch tubers and the fire spitting statue. It's in a corner.
6	29	Temae-Jima	In the room right after the long carpeted tunnel. It's on the metal deck to the right. (This floor only appears on Mondays, as it's only found in the Rotation 3.) You'll find it upstairs in the room with the wooden structure similar to the maze, generally there's a vending machine (the ones you can interact with which can give coins or spawn a Screamer) under the structure's stairs.
7	35	Wakaba	In a corner of an area of collapsed buildings and an exposed stairwell.
8	36	Yatsuo	On a very narrow ledge you have to hop onto. The ledge is down some stairs after entering a doorway at the lower part of the area.