Many fear this may cause even more instability in Southern Japan and provoke a partial sinking of that area.
Some interesting events took place around Sakurajima on April the 2nd and 3rd. A fleet of UFOs hovered above the volcano for 2 days while a great number of UFOs were even interfering in some unknown way.
See the videos here:
UFOs: Volcano Sakurajima! INSANE Activity [April 2-3, 2011];