I need source
>>14197146
looks like one of the Stringendo & Accelerando episode.. not sure which.
Actually it's not. Wrong animation. This looks like it's by the people who did Kanojo wa Dare to demo Sex Suru, Aneki... My Sweet Elder Sister The Animation, Ojousama wa H ga Osuki: The Animation and Kanojo ga Mimai ni Konai Wake. Whoever animated those also animated this.
Source -> Shoukoujo The Animation – Episode 1