its a 6.7 for me. it was an entertaining read up till like the last 50 chapters which felt like the author couldn't execute the ending that well. but the rest was satisfying enough to recommend it if u don't have anything else. its a classic "portals opened up on earth but the mc was teleported to another place for the first like 4 yrs and became op in that other place only to return back to earth at level 1 but still with exponential power growth" type manga. its a trope that i like so i read it but the ending was still kindof disappointing.