...?

Believing that it was unlikely for Straizo to give up so easily and resolutely take his own life,

Jonathan requested Speedwagon Foundation to search for his whereabouts.

However, after spending so much time and effort looking for him, Straizo was nowhere to be seen.

Since Kakyoin, who was in the verge of death, returned in good health

It was an indisputable truth that Straizo released a very powerful Ripple energy right before his disappearance.

Ultimately, it was concluded that "Straizo committed suicide with his own Ripple, and so he became ash and disappeared completely."

And the next morning...

Jonathan decided

For letting the enemy invade the mansion and hurt the guests,

And for approaching Straizo with an uncontrollable fit, moreover, getting influenced by the flesh bud and inflicting a great injury on Jotaro...

DIO was locked inside a coffin and submerged in the sea as a punishment.