Umm… I not sure exactly what you mean so now I’m going to go into a really long explanation lmao

Volume 1

Episodes 1-2

Application for a ticket to the morning session of the voice actor event on July 4th

Drama CD: CindeREKI

Booklet with some interviews in it

Audio commentary with Hatanaka Tasuku, Kobayashi Chiaki, Ookouchi Ichirou, Uryu Kyoko

Volume 2

Episodes 2-4

Application for a ticket to the evening session of the voice actor event on July 4th

Booklet of some designs (it looks like skateboard design notes from the preview of it they showed)

Booklet with some interviews in it

Audio commentary with Hatanaka Tasuku, Kobayashi Chiaki, Suzuki Mari, Uryu Kyoko

Volume 3

Episodes 5-6

Special CD with interview with Hatanaka Tasuku, Kobayashi Chiaki, Nagatsuka Takuma, and Miyake Kenta and instrumental versions of seize the moment and dimensions of the wind

Booklet with some interviews in it

Audio commentary with Kobayashi Chiaki, Midorikawa Hikaru, Koyasu Takehito, Mima Masafumi

Volume 4

Episodes 7-8

Character design materials booklet

Booklet with some interviews in it

Audio commentary with  Hatanaka Tasuku, Matsumoto Yasunori, Ono Kenshou, Uryu Kyoko

The rest aren’t out yet so they haven’t released as many details

Volume 5

Episodes 9-10

Drama CD

Booklet with some interviews in it

Audio commentary with Kobayashi Chiaki, Utsumi Hiroko, Chiba Michinori, Ikeue Masatake, Suzuki Mari

Episode 9.5

Volume 6

Episodes 11-12

Special CD with interview and track of Behind the Mask which was in episode 12

Audio commentary Hatanaka Tasuku, Utsumi Hiroko, Chiba Michinori, Ikeue Masatake

Creditless opening and ending (both versions)

Now this will be the more confusing and frustrating part because you have to buy different sets of BDs/DVDs from different stores to get what you want lol

If you buy volumes 1-3 of the BD at Animate you get this acrylic standee

If you buy volumes 4-6 of the BD at Animate you get this acrylic standee

If you buy all of the volumes at Animate you get a clearfile of this image

If you buy all the volumes at Rakuten you get an acrylic stand and a pin of this image

If you buy all the volumes at Seven Eleven you get an acrylic plate of this image

If you buy all the volumes at Amazon you get a tapestry of this image

If you buy volumes 1-3 of the BD at Aniplex+ you get this rubber keychain

If you buy volumes 4-6 of the BD at Aniplex+ you get this rubber keychain

If you buy all the volumes at Aniplex+ you get a Sketchy plushie

The rest of these they’ve announced what the extras are but they haven’t shown images of them yet. (edited later to add pics)

If you buy all the volumes at AmiAmi you get an acrylic clock

If you buy all the volumes at Sofmap Animega you get an acrylic stand

If you buy all the volumes at Tsutaya Records you get a bromide

If you buy volumes 1-3 at Tower Records you get a clear poster

If you buy volumes 4-6 at Tower Records you get a clear poster (I’m assuming a different one lol)