Resized to 85% of original (view original)
Artist's commentary
こうかん
Brianさんリク：This time, it will involve Kay and Heinrike Purinzessin zu-Sayn Wittgenstein, in a pic the same fashion as this pic: illust/28820170
Kay will be wearing Heinrike's uniform, while Heinrike is wearing Kay's school uniform...
This is fairly simple...