What animation does this GIF come from?

This is? Icebergs ! Bingguo is the first volume of a series of classical novels, a work of campus reasoning, and the first work of Japanese reasoning writer Shui Ze Sui Xin. This novel won him "juvenile reasoning &; "A reward for the ministry of terror. "Bingguo" is a Japanese reasoning writer Sui Xin Misawa, who won the 5th Kakukawa College Novel Award in 200 1 year. The first film awarded by the "Ministry of Terror" is just like the winning title. Bingguo is a juvenile reasoning work. Among other high school students who are about to start their "Rose" high school life, Oreki Houtarou, the hero of this drama, is a "gray" energy saver, that is, he doesn't do anything unnecessary because he doesn't want to regret it. It doesn't matter if someone says he is alienated and world-weary, because this is his style. In this way, he entered the "Ancient Books Research Association" which was on the verge of abandonment because of his sister's order. Originally, there was only Toyotaro's Classical Department, and later it was gradually increased. Chitanda Eru, keiji fukuda and Mo Yehua are three people. Chitanda Eru is curious about everything. When he found that Toyotaro had super reasoning ability, he repeatedly asked Toyotaro with the words "I'm curious". Toyotaro couldn't resist her eyes and had to answer. Finally, Chitanda Eru entrusted President Sekitani Jun (also Chitanda Eru's uncle) of Bangalore to drop out of school suddenly 45 years ago. However, the social magazine named "Bingguo" left by the President that year became the only clear clue. According to this clue, Toyotaro made amazing reasoning and solved the matter. Later, many puzzles were solved by Toytarot, namely, the corner of ten thousand people, the ending of fools, the ordering of Kutlija's Kafka and the dolls around him.