Further comments by Kuroda

JPY yields

I reckon he's talking about yields here as he mentions that in the context of a rise in long-term rates reflecting economic improvements. The gradual part is mainly saying that the BOJ will be stepping in to prevent unwarranted volatility in the bond market, like what they have done on previous occasions since July last year.

Yup, he just commented again saying that he doesn't see a scenario in which yields will "shoot up". Just wanting to let traders/investors know of their presence.