Naohiko Kasuya is currently an Associate Professor of Mathematics at Hokkaido University. He received the BS in 2009, the MS in 2011 and the PhD in 2014 from the University of Tokyo, supervised by Professor Takashi Tsuboi. Then, he was an Assistant Professor at Aoyama Gakuin University until 2016, an Associate Professor at Kyoto Sangyo University until 2020, and has been in current position since 2021. His research interest is in differential topology, contact geometry and complex geometry.