Do I get tax just by receiving money?

I’m assisting a friend in receiving a sum of money from a Japanese client, and I plan to transfer the equivalent amount from my home country’s account to minimize foreign currency conversion fees. I’m wondering if I need to declare and pay income or gift tax on this transfer. The amount is approximately 10-20 man yen, and I currently hold a 技術・人文知識・国際業務 (Technical Intern Training) visa. Can you provide insights into whether that amount might be subject to income tax/ gift tax , considering these circumstances?

by Upstairs-Yam-538