I bought 50 US dollars and left it alone for a day, adding $100. It makes sense to buy US dollars in the medium term, as interest rate differentials have a big effect. As for the BOJ's foreign exchange intervention, since Japanese stocks have also risen in tandem with the yen's depreciation, many are of the opinion that foreign exchange intervention will not occur unless the dollar exceeds last year's record of 151.95 yen.
https://fx-rashinban.com/b00001-JPY/...%2f8%92%a9%81j
https://fx-rashinban.com/b00001-JPY/...%2f8%92%a9%81j
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