How to Ask via email for supervision of professor for Japan Graduate program admission I would like to apply for graduate programs in Japan, and I have sent email to several professors in Japan (e.g., Todai, Tohoku) using this format (I only change the name of the professor and university, since the research topic is always the same):

Dear Prof Name,
I would like to introduce myself, I am Ahmad Zahi Ulul Azmi, Graduate of Engineering Physics from Bandung Institute of Technology (ITB) with specialization in robotics, medical instrumentation, and control. My Undergraduate thesis is about assistive exoskeleton robot for upper-limb stroke recovery therapy. Moreover, i have developed several robot such as unmanned ground vehicle controlled by smartphone, autonomous underwater robot (Champion of autonomous underwater robot category in Singapore Robotic Games 2016), remote operated underwater robot, quadcopter, and wall-climbing robot.
I would like to pursue Graduate Program in Toyohashi Univeresity of Technology for Fall Semester next year with MEXT university recommendation scheme scholarship. I am looking for possibilities for conducting research in your laboratory. I will be glad and feel honored if i can be accepted as graduate student in this university and have you as my supervisor. For the fundamental asset, i am familiar with CAD especially SolidWorks, i have done several projects with it. Also, i have a good basic knowledge about mechanics, calculus, control system, signal processing, computer vision, and programming in Python, C, and C++. I think it will be really useful for my research at Toyohashi Univeresity of Technology . Apart of it, i am ready to learn something new and develop more advanced robot.
If my study field is not well suited with your laboratory, i would be truly grateful if i could get a recommendation of another laboratory or professor.
With this email i attach my CV, please contact me if you require any further details or documents. I hope to hear from you in the near future.
Thank you

But I don't get any responses. Is there anything wrong with my email? How can I enhance it?
It needs to be much snappier. Consider something like this:

Dear Professor Name,
Do you have any positions available for graduate students in the Fall? I have a lot of experience with CAD, control systems, and signal processing (i.e., my autonomous underwater robot won the 2018 Singapore competition), and have published a few well-received papers [1,2]. This seems well aligned with your past work on similar topics [3,4], so I would be pleased to discuss opportunities working for you (or your colleagues) as a PhD student. Please let me know.
Name
[1] https://arxiv.org:blah.pdf
[2] etc.

where [1] and [2] are references to papers, links, codebases -- anything they can dive into to understand you more, and [3] and [4] are references to their work, so they see that you took the time to research them.
For me personally, I almost never respond to generic e-mails.
Note, I know nothing about the Japanese system; I'm only commenting on how your e-mail could be generally improved. (In particular, I'm wondering if this mail should be written in Japanese -- I know a lot of science is done in English, but if you speak Japanese, and the language of the university is Japanese, it might be better to write in Japanese or at least provide a translation).