Moving to Tokyo, trying to find a model agency.

My boyfriend and I are planning to move to Tokyo, Japan. I’m already in the process of getting my visa and I’m currently studying Japanese, but my boyfriend is looking for Japanese modeling agencies that can sponsor a long-term visa.
We’re trying to figure out the best way to approach the process and avoid unnecessary complications or delays. If anyone has experience with modeling agencies in Tokyo that work with international models and can help with visa sponsorship, we’d really appreciate any recommendations or advice.
Any tips on how to make the whole process smoother and less tedious would be greatly appreciated! ♡