まとめ
※トップをねらうケイさん https://www.pixiv.net/artworks/87263660
※酒呑おケイ https://www.pixiv.net/artworks/87263936
※ケイだっちゃ！ https://www.pixiv.net/artworks/87304627
元ネタ ともつか治臣先生の節分話https://kacchu.net/2019/02/23/【激突！女子高生お色気戦車軍団・304話】/

A play on words, as it uses "kei", which is the same as how Kay's name is spelled in Japanese.

A collection.
※ Top Wo Nerae! Kay-san https://www.pixiv.net/artworks/87263660
※ Shuten Kay-san https://www.pixiv.net/artworks/87263936
※ Kay da cha! https://www.pixiv.net/artworks/87304627
Original idea: Setsubun story of Tomotsuka Haruomi-sensei https://kacchu.net/2019/02/23/【激突！女子高生お色気戦車軍団・304話】/