Though it's impossible for it to be the highest selling Berryz single.
Berryz make about 3-4k after their first week nowadays. If Berryz were to make exactly 4k in the following few weeks combined, they'll still need around 1,540 more copies to sell in order to pass 37,096.
In the next single they just might, if, like previous stated, this single doesn't become its peak.