Tagging this Girls und Panzer as several elements of Darjeeling appear in the picture and in the commentary beyond just the similarity of their appearance. These references include: a comment based on her catchphrase in the comments, the mention of a Churchhill in the comments and as a tag on Pixiv, and the design of the teacup which has been seen in other pictures of Darjeeling (post #2833628, post #2834879, post #2879016, post #2943527, etc).