"Yuuki’s Camera" is a separate album

We collected a total of 146 original artworks in One-Way Ticket, so you can browse and save your favorite content, including:

1.     CG illustrations
The CG illustrations that appear during the "One Way Ticket" game.

2.     Original Background Art
The original versions of the "One-Way Ticket" game dialogue scenes.

3.     Original Atlas
"One-Way Ticket" scenes, CG and other design drawings and line drawings.

You can find the DLC document here:
[…]\Steam\steamapps\common\One-way Ticket · 单程票\DLC