No, there's still going to be around 60 million units of shares and the required number of shares is incredibly small, at only around 20,000 units in just the prime market. The requirements to at least get knocked down from prime market to standard market are pretty immense:
<10billion JPY market cap
They're around 140 billion JPY
<35% of shares are tradeable
Their free-float was around 40% before the cancellation and buyback I believe (free-float is the publicly traded shares that aren't held by insiders), so they're nowhere close to this one, especially since they just cancelled like 5% of their total shares.
<800 shareholders
This one I have no clue on but considering their trading volume, it would be nearly impossible for that to happen. If they are ever truly worried about this, they'll just do a stock split to intentionally lower the trading price of the stock (which usually makes investors happy) to attract more investors.
daily average trading volume is less than <20milllion JPY
Their average volume is 995.38K shares, so their shares need to drop to like 20 JPY for that to happen. Even if their stock value tanked to 1000 JPY, they would only really need 20,000 shares being traded, which is definitely going to happen considering how many people I've seen in the JP Yahoo comment section ignoring all financial info and are just treating this like a gambling game (which stock markets are generally). 20 million JPY is only 123,713 USD.
net assets isn't positive
They would have to leverage the everloving fuck out of their company because their leverage ratio is only like 27% of their SE.
Honestly their biggest concern, which I haven't seen anyone anywhere notice is that while their net cash flow is positive, it has decreased YoY from 6.6B JPY to 3.8B JPY. Even if they didn't count the buyback from December, their net cash flow would only be 6.3B JPY. A nearly 5% decrease in their cash flows YoY is pretty drastic and that's BEFORE the buyback in December for 2.5B JPY. Considering their newest buyback was for 7.5B JPY, there is a good chance their net cash flows will be in the red unless they pull in 20% more cash YoY.