Interests
- Deep learning for multimedia such as audio
- Frontend and backend web development
- Web application performance optimization
- Web security (CTFs and bug bounty)
Likes
- Listening to music
- Sandbox games (Factorio, Minecraft)
- Walking
See more in Music .
Education
2025-04 ~ present
University of Tsukuba, School of Informatics, College of Information Sciences
Transferred in as a third-year student, Multimedia Laboratory
2023-04 ~ 2025-03
Shinshu University, Faculty of Engineering, Department of Electronic and Information Systems
Information program
2020-04 ~ 2023-03
Waseda High School
Career
2026-01 ~ present
N.F. Laboratories Inc.
Long-term internship, security content development
2025-12 ~ present
Digital Experts Inc.
Long-term internship, full-stack web and infrastructure engineer for SaaS
2026-03
tkbctf5 organizer
CTF operations, web challenge authoring
2025-11
CODE BLUE 2025 student staff
Operations staff for a security conference
Certifications and Awards
2025-12
NeurIPS 2025 - Google Code Golf Championship
5th
2025-08
MIXI Git Challenge #15
Winner (Foxtrot)
2025-03
Web Speed Hackathon 2025
Top score (did not pass the regulation)
2024-12
Information Security Specialist Exam
Passed
2024-04
TOEIC Listening & Reading 645
Listening:330 Reading:315
2023-12
Applied Information Technology Engineer Exam
Passed
2023-12
Japanese ordinary driver license (AT only)
2023-12
2021-06
EIKEN Grade Pre-2
Passed
2021-02
Fundamental Information Technology Engineer Exam
Passed
CTF
2026-05
From Dusk Till Dawn 2026 CTF Quals
TPC / 2nd 🥈
2026-05
Break The Syntax CTF 2026
The Seoul Sauna Shogunate / 3rd 🥉
2026-04
Dreamhack Invitational 2026
Individual / 8th
2026-03
SECCON CTF 14 Domestic Finals
TPC2 / 8th
2026-02
Ministry of Defense Cyber Contest 2026
Individual / 12th (2nd among individual students) 🥈
2026-01
Dreamhack Invitational Quals 2026
Individual / 4th
2025-12
TSG CTF 2025
TPC2 / 24th (13th in Japan)
2025-12
SECCON CTF 14 Quals
TPC2 / 37th (8th in Japan)
2025-11
sknbCTF 2025
TPC / 2nd 🥈
2025-11
Core NetWars Tournament 11 - NRI Tokyo 2025
Individual / 2nd 🥈
2025-09
FFRI × NFLabs. Cybersecurity Challenge 2025
Individual / 2nd overall 🥈, 1st in web 🥇
2025-07
SECCON Beginners CTF 2025
TPC / 1st 🥇
2025-06
IERAE CTF 2025
TPC / 1st 🥇