Developed and released many software and games since junior high school. He has also been published in magazines. As a university and graduate student, he researched and wrote nearly 20 papers on security education and machine learning, and received many student incentive awards.
His experience includes design/construction/operation of networks and infrastructure, and design/implementation/operation of software, applications, and games.
On the other hand, he has also served as a lecturer at security seminars and provided problems for hacking events (CTF). He has won many awards at technical events.