A textbook for self-improvement, exploring the boundaries between common sense and unconventional thinking. - Title: Level Zero: A "Work Textbook" for Constantly Surpassing Yourself - Publisher: KADOKAWA - Price: 1,600 yen - ISBN: 978-4-04-606807-1 - Bonus: Four Powers to Level Up - Contents: Action, Thinking, Preparation, and Perseverance Thank you for viewing.