Original OST:
「這いよれ!ニャル子さん」OP「太陽曰く燃えよカオス」のFULI MADです。- This is a Japanese Animation “Haiyore! NyarlKo-san“ `s Fake Full Opening theme “Taiyou Iwaku Moeyo Chaos (Heat up, the Sun said to Chaos.)“.
A marvelous clip of Touhou Project chibi gals doing some morning gym i suppose... Anyway, (」・ω・)」Umph!! (/・ω・)/ Nya!!!
Original clip source: