ANSWER: Salary for Technical Intern Trainee in Japan is computed based on the prevailing minimum wage per hour in the prefecture where the worksite is situated. Payment of salary is governed of the labor standard law of Japan. You should not worry, you are well-protected just like a Japanese national.
The salary will of course depend on the employer. We cannot disclose the salary if the applicant has not been selected yet. :)

Again, we do not have any Processing fee / Placement fees and Salary deduction.