ポッキーの日なので。ちなみにたてセタの日でもあるらしいよ。
冗談で始めた姉とガチの妹。うちの子たちです。

I drew it since it's Pocky Day. It's also known as Vertical Stripe Sweaters Day, I hear.
The older sis started playing (TN: a Pocky game) jokingly and the younger sis took it seriously. They're my original characters.