t4420242

hi everyone i had been australian 2year (held student visa,and finished yet),then i have gone back to japan 2weeks ago. now a aus employer agree to sponsor me and give me 187visa,so i will be a pr after around 8month. can i apply citizenship after 2years? or i need to stay 4 more year because i have gone back to japan?(i have't held any aus visa when i was in japan) i will be grateful if anyone can give me some help ,thank!!