Thank you very much JAMZ!

My bf and I had a thorough talk about the issue after I have gathered information from this thread and online, and we have decided that he will just come for a visit this february. Feb is just around 4 months away, and I don't think we can acquire any sort of visa in this short period, so we just thought I'll just continue with my job here after he has left, and like we originally planned I'll just go visit him december next year.
I don't think It'll be hard for me to obtain a visit visa because I can prove I have a stable job here in Tokyo which is enough reason for me to come back, and just as long as I can provide what they require for obtaining it.
Thank you so much for the helpful responses I got from this thread, and I might come back again for inquiries when we finally decide to apply for a spouse visa sometime next next year.
Thank you everyone and more power to the forum!
You all had been very helpful!