Introduction

This case study highlights the experience of HDI Global SE, who implemented Aso-biz’s English-language team-building program, “Mystery Interactive Hunt.”
In this article, we present the program design and on-site experience in a gallery-style overview.
We hope this serves as a useful reference when planning English-language team-building events or off-site sessions for global teams.

Client

HDI Global SE

Program Implemented

Mystery Interactive Hunt

Venue

TKP Ichigaya (Tokyo, Japan)

Planning & Operations

SHUYU Inc.

Background & Objectives

Prior to the afternoon off-site discussions, HDI Global SE conducted a team-building activity designed for global members.
Under the theme “Open Communication and Transparency,” the goal was to build relationships that allow members—who do not often interact across departments, countries, or regions—to recognize one another’s strengths, share roles proactively, and move together toward new challenges.

Program Summary

• Language: English (facilitation and riddles provided entirely in English)
• Participants: All employees of the Japan entity
• Duration: 3 hours
• Number of Participants: Approx. 40 (9 teams)

Key Features

・Engagement Across Age and Culture

A game structure designed so participants can focus on teamwork regardless of “usual role, seniority, or cultural background,” encouraging full participation from all members.

・Role Sharing & Teamwork Development

Within limited time, teams divide roles—information整理, deduction, reporting—autonomously to solve riddles efficiently.
Aso-biz was responsible for the morning portion of the full-day corporate off-site.
Aligned with the off-site theme, “Open Communication and Transparency,” we integrated worksheet-based Plan and Check reflection components before and after the Treasure Hunting game to cultivate proactive communication and a challenge-oriented mindset for the afternoon discussions.

Aso-biz was responsible for the morning portion of the full-day corporate off-site.

Aligned with the off-site theme, “Open Communication and Transparency,” we integrated worksheet-based Plan and Check reflection components before and after the Treasure Hunting game to cultivate proactive communication and a challenge-oriented mindset for the afternoon discussions.

▼schedule

1.Self-disclosure
2.Mutual understanding
3.Challenge (collaborative problem-solving to create value)

The program is designed so that even small moments of success or failure during the riddle-solving phase become a foundation for afternoon discussions and future collaborative challenges.

▼Don’t be fooled by the word “game”—participants were fully immersed and serious throughout the activity.
▼Between riddles, reflection sessions were incorporated to evaluate strategies and outcomes.

▼Each team presented their strategy, actions, and learnings to the entire group at the end.

▼The mid-game leaderboard generated excitement, with major shifts in ranking during the second half.

▼The final reflection session was filled with smiles and active discussion.

▼High-ranking teams received awards directly from the company president.

Participants shared a variety of positive impressions during the reflection session:

• “I was able to feel the pure spirit of tackling a challenge as a team, without preconceived notions.”
• “Within a limited time, each person’s strengths and natural role-sharing became visible.”
• “A true sense of teamwork emerged as we became partners in the same challenge.”

Across all teams, we received numerous positive comments.