http://alice-books.com/item/show/5038-3

It doesn't seem like you can buy this digitally.

This is set after the events of the manga. The kids on page two are from Tsunousagi which is part of the same universe as Pandemonium.

Crepix doujins are rare to be scanned, thanks.

Base +10, ROTHY +7, Cargath +6, EBIL64 +6, fktang +6, MAYBE NAWT +4

I read the manga the last week and was a very good experience.
Totally recommended.

Base +6, Cargath +6, ROTHY +7, joeaverage +6, reztex +6, MAYBE NAWT +4

Doujinshi.org - https://www.doujinshi.org/book/1589499/After-Like/

Suruga-ya - https://www.suruga-ya.jp/kaitori_detail/ZHOA85931

Pixiv - https://www.pixiv.net/member_illust.php?mode=medium&illust_id=69905024

Artist - Cre (シーレ)

Alias: crepix

Cre Home Page - http://crepix.sakura.ne.jp/

Cre Pixiv - https://www.pixiv.net/member.php?id=834187

crepix Inkbunny - https://inkbunny.net/crepix

Cre Booth - https://cre.booth.pm/

Cre Twitter - https://twitter.com/crepix

Cre Pawoo - https://pawoo.net/@crepix

Base +47, TheGreyPanther +57, ROTHY +7, Cargath +6, saitias +5, tdzun +5, bigblackD +13, Dnkz +31, MAYBE NAWT +4