I've been trying to find this for a while now with no luck. Please help.
Links to the author's pixiv and twitter:
https://www.pixiv.net/member.php?id=4268951
https://twitter.com/monoca71
2018/03/25
Ryo Tominaga
Hello,
Thank you for your message
We are sorry that we cannot find requested item below.
There are no stock any other shops and auctions.
https://www.pixiv.net/member.php?id=4268951
https://twitter.com/monoca71
Please feel free to ask if you have any other requests.