What Is “Kohai”? Japanese Etiquette and Social Structure Through the Senpai–Kohai Relationship

LOANWORD

Supervisor: Naohiro Takemura

Started his career based on his experience at an accounting firm.
For approximately 30 years, he has been engaged in database marketing, finance, entrepreneurship, BPO operations, and new business planning.
He is well-versed in fundraising and financial management, and currently manages his own company while also undertaking outsourced work in management and new business development.

In Japanese society, the relationship between “Senpai” and “Kohai” exists everywhere—from schools to workplaces. A “Kohai” is not just someone younger but someone who learns and builds relationships through respect. This unique system reflects Japan’s deep values of courtesy, trust, and mutual growth.

What Is Kohai?

In Japan, “Kohai” refers to someone who joined an organization later or has less experience. Unlike in many Western cultures where age determines hierarchy, in Japan, the order of joining or length of experience defines relationships. Therefore, it is not unusual for an older person to be considered a Kohai.

Although “Kohai” is often translated as “junior,” it carries a much deeper cultural nuance. It is not just a label of position but a relationship that includes respect, humility, and learning.

PerspectiveDescription
PositionSomeone less experienced who is in a learning role
Basis of statusDetermined by entry date or experience, not age
Main roleTo learn and adapt to organizational rules and culture
English equivalentJunior, younger colleague, underclassman

The concept reflects a culture of respect and harmony, central values in Japanese social life.


Relationship Between Senpai and Kohai

In Japanese culture, “Kohai” always exists in relation to “Senpai” (先輩). A Senpai is a more experienced person who guides, advises, and supports the Kohai. The Kohai learns through observation and experience, eventually becoming a Senpai to the next generation.

This creates a continuous cycle of learning and mentorship, which serves as the foundation of Japanese human relationships.

RoleBehaviorPurpose
SenpaiTeaches, advises, supportsMaintains group order and culture
KohaiLearns, shows gratitude, assistsGrows and passes knowledge forward

This bond, built on mutual trust and respect, is not a simple hierarchy but a relationship of cooperation and care unique to Japan.


The Role of Kohai in Schools and Workplaces

In school life, a Kohai learns respect through daily manners such as using polite language and greeting seniors properly. In clubs, Kohai follow instructions and develop teamwork skills through practice and participation.

In the workplace, the relationship is based on years of experience rather than age, so an older person may be a Kohai to a younger Senpai. In modern times, Japan’s workplace culture has shifted toward team-oriented collaboration rather than strict hierarchy.

EnvironmentBasis of RelationshipKey Values
SchoolGrade level or year of entryRespect, effort, teamwork
WorkplaceYear of joining, years of experienceCommunication, responsibility, independence

Thus, the Kohai position represents the first step of social learning in Japan.


Kohai Culture in Anime and Manga

Through anime and manga, the concept of “Kohai” has gained worldwide recognition. The “Senpai–Kohai” dynamic is often featured in stories, symbolizing the beauty and warmth of Japanese interpersonal relationships.

Scenes showing a Kohai who admires their Senpai or a Senpai supporting a Kohai reflect mutual respect and growth rather than superiority. These portrayals have helped international audiences understand Japan’s values of humility, gratitude, and cooperation.

Depicted RelationshipMeaning
RespectAdmiration toward a Senpai as a role model
TrustEmotional support and reliance between individuals
GrowthBoth Senpai and Kohai develop through interaction

Through such representations, “Kohai” culture has become a symbol of Japanese social values appreciated around the world.


Manners and Mindset of a Kohai

In Japanese society, how a Kohai behaves greatly affects how they are perceived. The following manners are considered essential for earning respect and trust.

MannersExplanation
Use polite languageAlways speak respectfully to seniors
Show gratitudeExpress thanks sincerely for any guidance received
Be proactiveTake initiative and learn without waiting to be told
Stay humbleAcknowledge mistakes and strive to improve
Be cooperativeMaintain harmony and work well with the team

By following these principles, a Kohai not only earns trust but also opens more opportunities for personal and professional growth.


The Evolving Role of Kohai in Modern Society

In the past, Japanese culture emphasized strict hierarchy where Kohai were expected to follow instructions without question. Today, however, Kohai are viewed as active contributors and collaborators.

Modern organizations encourage horizontal communication, where Senpai and Kohai share ideas and learn from each other. A Kohai is now expected to bring fresh perspectives and creativity to the team.

EraRole of KohaiRelationship Traits
PastObedient to Senpai’s instructionsClear hierarchical structure
PresentExpresses opinions and takes initiativeCooperative and balanced
FutureKey contributor to team successMutual respect and shared growth

This transformation mirrors Japan’s shift toward global, flexible, and inclusive work styles.


Conclusion

The term “Kohai” does not simply mean “someone younger.” It embodies a culture of learning, respect, and continuous growth. A Kohai learns from their Senpai, absorbs social values, and eventually becomes a Senpai who guides others.

This cyclical relationship forms the backbone of Japanese social harmony. By respecting others, showing gratitude, and embracing mutual learning, one can become a truly respected Kohai.

To respect others, to learn from them, and to become someone who supports the next generation — this is the spirit of “Kohai.”

It represents one of Japan’s most beautiful and enduring cultural values.