Professor of Keio University Law School


Hiroki Sasakura joined the Keio University Law School faculty in 2011, and has been professor of law since April 2013. After graduating from the University of Tokyo Faculty of Law, he served as research associate and assistant professor at the University of Tokyo (1999-2004), and associate professor at Chiba University (2004-2011). He also studied at Harvard Law School (East Asian Legal Studies program) as a visiting scholar (2007-2009), for which he received the Fulbright research grant (2007-2008, Japan-US Educational Commission/U.S. Department of State).

His primary interest lies in the broad field of criminal procedure, where his work ranges from theoretical and practical problems of criminal investigation, prosecution, and adjudication to criminal evidence to institutional design, with a particular focus on issues related to the right of privacy, on the interplay of parallel civil/administrative and criminal proceedings, and on unique facets of substantive and procedural criminal law as compared with other fields of law.

Courses taught by Professor Sasakura at KLS have included Criminal Procedure (1L), Advanced Criminal Procedure (2L), Advanced Criminal Law (both substantive and procedural law, with Prof. Makoto Ida) (3L), Introduction to American Criminal Justice (2L & 3L), and Basic Problems in Criminal Procedure (2L & 3L). He has also offered seminars on criminal procedure for undergraduate students majoring in law.

◆Fields of Expertise

• Criminal Procedure
• Law of Evidence


Law Review Articles

(in Chinese)
1. Recent Developments in the Japanese Law of Criminal Procedure: Implementing "Saiban
-in" (Quasi-Jury) System in Criminal Trials] (pts. 1&2), 150 Yuedan Faxue Zazhi [Taiwan
  Law Review] 147-163, 151 Yuedan Faxue Zazhi 219-232 (Chih-Hung Chen trans., 2007).

(in Japanese)
2. The Privilege Against Self-Incrimination, 265 Hôgaku Kyôshitsu 103-112 (2002).
3. Parallel Administrative and Criminal Proceedings (pts. 1-3), 123 Hôgaku Kyôkai Zasshi
  [Journal of the Association of Jurisprudence] 818-911, 2091-2191 (2006), 125 Hôgaku
  Kyôkai Zasshi 968-1051 (2008).
4. Relevancy of Evidence, 308 Hôgaku Kyôshitsu 26-30 (2011).
5. Accident/Incident Investigations for Safety Purposes and Criminal Procedure: On the Final
Report and Recommendation of the Consumer Affairs Agency's Research Panel on
Accident/Incident Investigation Bodies(pts. 1&2), 1432 Jurisuto 29-36, 1433 Jurisuto 64-74
6. The Adversary System, 376 Hôgaku Kyôshitsu 4-11 (2012).
7. Two Types of Criminal Trials: Anglo-American Defendants Keeping Silence versus Japanese
Defendants Speaking Up, 398 Hôgaku Kyôshitsu 20-27 (2013).
8. Administrative Investigations: From the Perspective of the Law of Criminal Procedure, 1066
  Hôritsu Jihô, 25-31 (2013).
9. Solving Potential Conflicts Between the Adversary System and the Court's Commitment to
Narrowing the Issues of the Case and Selecting Evidence to be Introduced, 789 Kenshû 3-14
10. Interception of Telecommunications and Electronic Surveillance of Conversations: An
       Analysis of the Final Report of the Ministry of Justice Legislative Council's Special Panel
       1077 Hôritsu Jihô 29-36 (2014).
11. Compulsory Measures, Non-Compulsory Measures, and Privacy: A Dialogue on
       Dataveillance Between Constitutional and Criminal Law Scholars--Foreword
,1085 Hôritsu
       Jihô 58-59 (2015).
12. Legal Principles Governing Criminal Investigation and Information Privacy: A Proposal to
       Regulate Dataveillance
, 1085 Hô­­­­­ritsu Jihô 70-77 (2015).

Notes and Comments

(in Japanese)
13. Note, Seizure of Flexible Disks and Other Digital Media Without On-site Brief Examination
       of Their Contents
, 1191 Jurisuto 80-84 (2000).
14. Note, Civil Tax Audit and Possible Use of Evidence in a Successive Criminal Investigation,
       1304 Jurisuto 188-193 (2006).
15. Comment, Scope of Search and Seizure Incident to Arrest, in Keiji Soshô Hô Hanrei
       Hyakusen 62-63 (Masahito Inouye ed., 8th ed. 2005).
16. Comment, Warrantless X-Ray Inspection of a Parcel during Transport, Heisei 21 Nendo
       Jûyô Hanrei Kaisetsu 208-210 (2010).
17. Comment, Warrantless Inspection of Personal Belongings by Police Officers during a Street
       Encounter, in
Keiji Soshô Hô Hanrei Hyakusen 10-11 (Masahito Inouye et al. eds., 9th ed.
18. Note, Necessity to Amend the Count: Discrepancy Between the Served Charging Sheet and
       the Verdict Regarding the Method of Setting Fire in an Arson Case
, Heisei 24 Nendo Jûyô
       Hanrei Kaisetsu 181-183 (2013).

Book Chapters

(in Japanese)
1. Criminal Procedure: Is Lawyers' Common Perception Against Common People's Wisdom?,
in Hôgaku no Sekai (Shigeru Minamino ed. 2011).
2. Article 328 of the Code of Criminal Procedure: Impeachment by Inconsistent Statement,
Keiji Soshô Hô no Sôten 176-179 (Masahito Inouye & Tadashi Sakamaki eds. 2013).
3. Enforcement of Administrative Law and Criminal Law: A Comparative Perspective,
2 Iwanami Kôza Gendai Hô no Dôtai [Iwamami Lectures on Dynamics of Contemporary
  Law] (Yasuo Hasebe et al. eds. 2014).

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