3/21 is Sunny Milk's Day! The date was based of her name Sunny (サニー) where サ = 3, ニ = 2, and ー = 1, thus 3/21

I love the scene in Touhou Sangetsusei where the Three Fairies of Light are hugging Marisa.

Sorry... Even for me, that's a no go.

The face the usually cheerful Sunny Milk makes when she finally gets put off by something.