According to his testimony featured on the website of Leadbrain, a Tokyo-based labor and human resources consulting firm, he sought a quiet way out because he was wary of how colleagues perceived him. He was reluctant to burden his parents and determined to avoid workplace conflict, which is a common attitude among working Japanese.
Rather than submitting his resignation in person, he opened his phone and began searching for a resignation proxy service, a third-party agency that could help him quit without direct interaction with his employer.