[Rin Kagamine] pet❤me! (English Subs)

Song by きゃんでぃP (CandyP) sounds like an eroge OP, doesn’t it? Very cute kitty Rin, I doubt anyone could resist her heartmeltingly adorable charm. I think this is related to the cat Rin spam on Pixiv some days ago, on February 22nd. I don’t really get it, but is that supposed to be cat day or something?