Description:

Author's Pixiv: https://www.pixiv.net/member.php?id=317110

Author's Twitter: https://twitter.com/yama9jira

Author's Manga on Mandarake: https://order.mandarake.co.jp/order/detailPage/item?itemCode=1111776418

(The characters in the second chapter of this Halloween manga - the witch and the cat-boy - are a crossover from this other manga on Mandarake, called "Meteor Cider")