Moving to Tokyo help

Hello, I am a Japanese national 20yr old.

I recently got a job in Tokyo ! woohoo !

… but then I realised I live in Hiroshima 💀

I've never moved before and I'm not familiar with the process. I have no support so I'm looking here for help.

If anyone can link me what companies I should contact and what the process is like I'd appreciate it. I gotta get my ass outta here.

Thanks.