If the demand for Yen increases because investors expect higher returns from Japanese stocks, it is always guaranteed that the Yen will appreciate in value against all other currencies.

When the demand for Yen increases because investors believe Japanese stocks will earn more money, it usually means more people want to buy Yen to invest in those stocks. This increased demand can lead to the Yen becoming stronger or appreciating against other currencies. However, it is not guaranteed that the Yen will appreciate against all currencies because other factors also play a role, like economic conditions in other countries and their currencies' strength. For example, if the U. S.