Kunkasha  Co., Ltd.

Social-adaptation improvement program


Offering bio-social intervention


to create better life course


Kunkasha  Co., Ltd.

About Us


Our mission is to solve the social problems of individuals, families, schools, private/public sectors, societies, and governments and help them  create better lives/societies/countries through our evidence-based programs.


*We specialize in various social issues, such as social maladaptation, juvenile delinquency and crime prevention, by providing expertly advises and our world-class program which is evidenced-based in Criminology,  Socio-neurology, Neuropsychology, Cognitive Psychology etc.


* We support to solve problems of individual-level to national-level.



We have a clear and simple set of values —we believe that every person has second chance if only they acquire the appropriate program that meets their individual needs. We also believe the evidence-based practice is the best way to improve society/nation in consideration of cost-benefits.




The Board of Directors


Chief Executive Advisor

Shinichi  YAMANAKA


 *The ex-Ambassador Extraordinary and Plenipotentiary  of  Republic of Bulgaria

 *Former Administrative Vice Minister of the Ministry of Education, Culture, Sports, Science and Technology(MEXT)



Chairman  and  Chief Executive Officer

Tadashi  MUKAI


 *The Ministry of Justice Type I National Civil Service;  Tokyo, Osaka, Hiroshima Regional Correction Headquarters education section manager et al.

*At Tama, Naniwa, Seto, Hiroshima, Nara, Uji ,Ibaraki,Juvenile Training School in the Ministry of Justice Deputy Director General, Chief Specialist et al.

*National Personnel Authority Member of the Board, Visiting Researcher at Hokkaido University, local public entity consultant 

*Specialist of  crime measures, criminal treatment, correction education, organizational management, human resources development, management, the consultant for the politician.



Executive President   

Yasuhiro  HOSOI, MA


*Director of the Juvenile Classification Home in the Ministry of Justice

*Certified Clinical Psychologist

*Specialist of criminal psychological analysis


Executive Vice President  

Shunji   MATSUI


*Former Principal Specialist of Juvenile Training School in the Ministry of Justice

*Specialist of physical training and sports

*Specialist of treatment and training to juvenile delinquents 




We provide individuals

turning point of their life course.


We provide programs:


  -for improvement and rehabilitation from social-adaptation such as crime by making use of comprehensive scientific intervention


-to those individuals/families/schools/private sectors/societies etc. with particularly difficult risk factors


-according to clients’ risk-needs


-targeting delinquency, crime, social maladjustment (including hikikomori) and general


-targeting Social-adaptation(i.e. drug addiction, schizophrenia, refractory sleep disorder, eating disorder, symptomatic disorder, developmental disorder etc.)



Let us help and support you change!


 *It is a fact that the recovery from drug dependency requires general scientific intervention based on individual needs.

*It is a fact that whether our client is individual/family/private sector/society/government etc. each risk factor domains(i.e. individual, family, school, peer group, community) must be analyzed to set Kunkasha’s evidence-based programs.

*It is a fact that impeccable individual/family/society make the country more prosperous.


We will provide these practical solutions and programs.


Let us help and support you change!