Tom is Cruising solo in Japan this week, flying across the Pacific as part of a promotional tour for Mission: Impossible 3.
Fiancee Katie Holmes and baby daughter Suri were nowhere in sight, but clearly on the minds of the Japanese media.
"Unfortunately, I wanted to bring them but Suri, it'd be too much for her, we're only going to be here for a day and a half," Cruise told reporters.
Suri is the only one of the recent deluge of celebrity babies who has yet to be seen, making the media frenzy surrounding Cruise (already the world's biggest star) extraordinarily high.
At the press conference, the crazy one gushed about his three kids (he has two adopted children, Isabella, 13, and Connor, 11, with ex-wife Nicole Kidman) and, at one point, said he hopes to have 10 offspring someday. Gulp.
He did not comment on whether each of their births will conveniently coincide with the premiere of his films.
When asked whether TomKat will become official and marry, Tom responded that they "haven't set a date yet, but soon, it'll be this year."
The two are reportedly finalizing a prenuptial agreement before making it legal. After the Japan premiere of M:I-3, Cruise is expected to ride the bullet train to Osaka with 150 fans on Wednesday. Along the way, he may or may not ridicule fans for their beliefs in psychiatry.