The date is a pun:
Good → ii → 11
Knee-high → niihai → ni(i)ha(i) → ni (2) ha (short for hachi, 8)Youmu-chan with
Knee-highs x China dressGonna go on a limb and say this is probably another pun. Knee high → niihai → niihao, which is how 你好 (hello in Mandarin Chinese) would be pronounced in Japanese.Do you guys like this sort of thing?I wonder if these sort of tastes are normal...Sentiment of approval
A day in which many pictures of knee-high socks are posted on the internet!
