I see there has been a bunch of level ups in the past 24h, and I am here to join the party with my shiny new level 46! 
Time to (figuratively) move up the chart!
By the way, I am a little disappointed - I was so convinced that I was on the fast levels after 43, but I had to wait to unlock the final few kanji instead? There are exceptions to fast levels? Alright, I just consulted The Ultimate Guide for WK and there indeed are exceptions. 45 is one of them. I suppose you learn something new every day 